Contract 0xb2244a08d94e237936c032dba2631b826e752739

 

Contract Overview

Balance:
0 BNB

BNB Value:
$0.00

Token:
 
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Value [Txn Fee]
0x14d21d28c9a4e6b3fcf8d8aa31c7a1a16f11c5dc55cfc34d4bd1cecf7892191fApprove121748922021-10-28 22:01:2038 days 23 hrs ago0x8022d069433d20a78c6ccc7474a399095fdf3dc3 IN  0xb2244a08d94e237936c032dba2631b826e7527390 BNB0.000226155
0xaaaa07902ff7bd91b99c7ff3dd1e4b8a1a733e9f4371e07f5c1376d1232ee8d6Approve119660192021-10-21 13:33:0146 days 7 hrs ago0x17272107d34a6a2a443d64df83565a09c2ad0244 IN  0xb2244a08d94e237936c032dba2631b826e7527390 BNB0.000226155
0xdcf2393a19ec6248fc4e643dcad0c9c623418120e039e1c6cf5055ce9d1063beApprove119539342021-10-21 3:12:2046 days 18 hrs ago0xadbec656dc00a51db5956bf376f194a77d649b22 IN  0xb2244a08d94e237936c032dba2631b826e7527390 BNB0.000226155
0x808a315546384a258107470b44f6d47f9573137bfd9ee0e298875df8ca92b1a3Approve118828042021-10-18 15:07:0749 days 6 hrs ago0x63501053ffa9d8d210af56c7cfb3054221716d1f IN  0xb2244a08d94e237936c032dba2631b826e7527390 BNB0.000226155
0xbf7da0a0e2a0ed2b7db38fa2b5d2c995c5492a2817a61932e87848518980daa2Approve118320282021-10-16 20:34:2651 days 43 mins ago0x7f10196c2c7dfc3fde0ce431bd04bf093d6b4988 IN  0xb2244a08d94e237936c032dba2631b826e7527390 BNB0.000130155
0x49bbd63330db36d9f23dbb8a46f1fae83ca3df4996e221e8eccbf53f064a0f97Approve118320162021-10-16 20:33:5051 days 43 mins ago0x7f10196c2c7dfc3fde0ce431bd04bf093d6b4988 IN  0xb2244a08d94e237936c032dba2631b826e7527390 BNB0.000226155
0xbbe0fff28c691e4074a841cdd1272c0fefa1cfdbfbd2e0a02ccc1f01f56f8ea0Transfer118319632021-10-16 20:31:1151 days 46 mins ago0xf0f342a0335abb57e7d8c0e92c33f8f30e35a2c0 IN  0xb2244a08d94e237936c032dba2631b826e7527390 BNB0.001568825
0x4e24b059ee7249a5ac239b3974a080395fc769c00c8fd663b338c30e46544199Approve118315632021-10-16 20:11:1151 days 1 hr ago0xf0f342a0335abb57e7d8c0e92c33f8f30e35a2c0 IN  0xb2244a08d94e237936c032dba2631b826e7527390 BNB0.000271386
0x07d8b625ee3f9e5f35ac4a95893cb2e872291e023ecfe18806bfbec5b50ff47eApprove117460932021-10-13 20:36:5854 days 40 mins ago0x609b9dd72e70a68cb8a47bb99a763f0043996434 IN  0xb2244a08d94e237936c032dba2631b826e7527390 BNB0.000226155
0x9d09b919c84478ccfc2ccce431413afe4ddb44b298f9dec4131fd2ee7f59156dApprove117323122021-10-13 8:59:3554 days 12 hrs ago0xab6afbfd6fba45a587d42bc377ba09ec41a50f50 IN  0xb2244a08d94e237936c032dba2631b826e7527390 BNB0.000226155
0x3d1cff12406c5fb83eec75e70fd8e6afe0724318a2b2eb7228b50f18b4c7d051Approve116663952021-10-11 0:56:5356 days 20 hrs ago0x78eba7e4504c9569e60b7eb57525c58db0f1a77d IN  0xb2244a08d94e237936c032dba2631b826e7527390 BNB0.000226155
0xf6a23fc91be063949081b419606d1664c1f0f53d8fe3c47819ae52ab8537310dApprove116606982021-10-10 20:11:5957 days 1 hr ago0x68cd936cb321c829b7f7a21f53e068ec14f15c20 IN  0xb2244a08d94e237936c032dba2631b826e7527390 BNB0.000226155
0xada5e8641cac4f82db5641b8e8256d09332b3c17a79cff87e29863d71e3cddf0Approve116579572021-10-10 17:54:5557 days 3 hrs ago0x72af70ad28c40a280f391959c90aaf437e926b43 IN  0xb2244a08d94e237936c032dba2631b826e7527390 BNB0.000226155
0xa86c0f27660ad4b03dc70b2a597d713e7809c59e245c1a6e33bca0cce8892c0eApprove116539932021-10-10 14:36:3057 days 6 hrs ago0x9756c83571bfe4d212116489e6ccd64d6a2fabaa IN  0xb2244a08d94e237936c032dba2631b826e7527390 BNB0.000226155
0x2b525256c0520fd4f6e8f3a5212ea656bfd12dbce5eb063de6c0d16a9f02e3f1Approve116270342021-10-09 16:01:5558 days 5 hrs ago0xb06cc147d5b1310e6ddb313d0447fca77f7d1017 IN  0xb2244a08d94e237936c032dba2631b826e7527390 BNB0.000226155
0x7d3c5acb1706aa1fd6103a5973b9ade57a3b4be9ca7b5e2301e1581b4ce8dea2Approve116266562021-10-09 15:43:0058 days 5 hrs ago0xfec45ce1089c4f02825f7d40a8ae9c5402e20a52 IN  0xb2244a08d94e237936c032dba2631b826e7527390 BNB0.000226155
0x4458ae0063a6f7bd6e3a0e9cf8d59dccebbac925134db2667fb8994d38b1e6d4Approve116034432021-10-08 20:17:3159 days 1 hr ago0xa79cf9d5b03edfc947152e168b37f88f2f6cf162 IN  0xb2244a08d94e237936c032dba2631b826e7527390 BNB0.000130155
0x7f388464336e3a4cb5fa8a0786b2db4e5abaf766425d168adf0c75b5d8586c08Approve116034382021-10-08 20:17:1659 days 1 hr ago0xa79cf9d5b03edfc947152e168b37f88f2f6cf162 IN  0xb2244a08d94e237936c032dba2631b826e7527390 BNB0.000226155
0xf5dd3d176ef084382fc698754b3d1abcacf2abcbf26045c4cecf994885deb457Approve115998562021-10-08 17:17:0759 days 4 hrs ago0xb0fa9c6c74f8d8d8d6aa38fa56d38e615a690bde IN  0xb2244a08d94e237936c032dba2631b826e7527390 BNB0.000226155
0xb700105879155b67b128d858dfd9596c65ffe7e8c77154c1582901fffc064771Approve115617112021-10-07 9:27:5260 days 11 hrs ago0xc3430b4102b46eb880ea55ad4042c1a6eb63645e IN  0xb2244a08d94e237936c032dba2631b826e7527390 BNB0.00007462
0xdb75dc8c9cc4e7085a24ab5edd301dbe637a9ff08af420a947fd894774f2a6bdApprove115613242021-10-07 9:08:3160 days 12 hrs ago0x12764a83c9a57c6b724e9905e2aae2ad7d7d9742 IN  0xb2244a08d94e237936c032dba2631b826e7527390 BNB0.000226155
0x36f0b64d4194d23800205eb51411e5c8746e711d466598d54caae590334b6556Transfer115136192021-10-05 17:19:5862 days 3 hrs ago0x4774015426703c1b27639ac7728a81791d5e7f2c IN  0xb2244a08d94e237936c032dba2631b826e7527390 BNB0.00145139
0x0e0bf9eb585987e3f923a99b79f6cb5e12d11effd7832f7c8910511fd18ac347Approve115133972021-10-05 17:08:5262 days 4 hrs ago0x0050b859bbccf890a60e6ff34aead8e35cbac109 IN  0xb2244a08d94e237936c032dba2631b826e7527390 BNB0.000226155
0xc26b7add1def517f9ca4587c799371b1fa44a583af007067968130bb3a107c2eApprove115125952021-10-05 16:28:4662 days 4 hrs ago0x799007ad39c2eb6574475fc8e2bc409f677bed2b IN  0xb2244a08d94e237936c032dba2631b826e7527390 BNB0.000130155
0x3e47a4e88aae8d5ec2ed275192f26ee08ac049043af9adf18a672b25d23f7b8aApprove115125942021-10-05 16:28:4362 days 4 hrs ago0x799007ad39c2eb6574475fc8e2bc409f677bed2b IN  0xb2244a08d94e237936c032dba2631b826e7527390 BNB0.000226155
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0x37a832e397e5d3db144c7f3990a8a6764a0bf32d35eec9a00c541b22102451d2113518872021-09-30 1:35:1967 days 19 hrs ago PancakeSwap: Router v2 0xb2244a08d94e237936c032dba2631b826e7527390.01561612258579932 BNB
0x37a832e397e5d3db144c7f3990a8a6764a0bf32d35eec9a00c541b22102451d2113518872021-09-30 1:35:1967 days 19 hrs ago 0xb2244a08d94e237936c032dba2631b826e752739 PancakeSwap: Router v20.318764717489530429 BNB
0x37a832e397e5d3db144c7f3990a8a6764a0bf32d35eec9a00c541b22102451d2113518872021-09-30 1:35:1967 days 19 hrs ago PancakeSwap: Router v2 0xb2244a08d94e237936c032dba2631b826e7527390.318764717489530429 BNB
0x03231e7a6af01ac566354260a9e078dd7efc81dcb64f0d2d0aa555440d1429ba113239492021-09-29 2:06:5868 days 19 hrs ago 0xb2244a08d94e237936c032dba2631b826e752739  Contract Creation0 BNB
0x03231e7a6af01ac566354260a9e078dd7efc81dcb64f0d2d0aa555440d1429ba113239492021-09-29 2:06:5868 days 19 hrs ago 0x069fd156c0d22e5d5f68e92f3237624b8eb6ae9c  Contract Creation0 BNB
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Minimal Proxy Contract for 0xb2244a08d94e237936c032dba2631b826e752739

Contract Name:
AntiBotBABYTOKEN

Compiler Version
v0.7.6+commit.7338295f

Optimization Enabled:
Yes with 200 runs

Other Settings:
default evmVersion, MIT license
Decompile ByteCode

Contract Source Code (Solidity)

Similar Contracts
/**
 *Submitted for verification at BscScan.com on 2021-09-04
*/

// Dependency file: @openzeppelin/contracts/utils/Context.sol

// SPDX-License-Identifier: MIT

// pragma solidity >=0.6.0 <0.8.0;

/*
 * @dev Provides information about the current execution context, including the
 * sender of the transaction and its data. While these are generally available
 * via msg.sender and msg.data, they should not be accessed in such a direct
 * manner, since when dealing with GSN meta-transactions the account sending and
 * paying for execution may not be the actual sender (as far as an application
 * is concerned).
 *
 * This contract is only required for intermediate, library-like contracts.
 */
abstract contract Context {
    function _msgSender() internal view virtual returns (address payable) {
        return msg.sender;
    }

    function _msgData() internal view virtual returns (bytes memory) {
        this; // silence state mutability warning without generating bytecode - see https://github.com/ethereum/solidity/issues/2691
        return msg.data;
    }
}


// Dependency file: @openzeppelin/contracts/token/ERC20/IERC20.sol


// pragma solidity ^0.7.0;

/**
 * @dev Interface of the ERC20 standard as defined in the EIP.
 */
interface IERC20 {
    /**
     * @dev Returns the amount of tokens in existence.
     */
    function totalSupply() external view returns (uint256);

    /**
     * @dev Returns the amount of tokens owned by `account`.
     */
    function balanceOf(address account) external view returns (uint256);

    /**
     * @dev Moves `amount` tokens from the caller's account to `recipient`.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * Emits a {Transfer} event.
     */
    function transfer(address recipient, uint256 amount) external returns (bool);

    /**
     * @dev Returns the remaining number of tokens that `spender` will be
     * allowed to spend on behalf of `owner` through {transferFrom}. This is
     * zero by default.
     *
     * This value changes when {approve} or {transferFrom} are called.
     */
    function allowance(address owner, address spender) external view returns (uint256);

    /**
     * @dev Sets `amount` as the allowance of `spender` over the caller's tokens.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * IMPORTANT: Beware that changing an allowance with this method brings the risk
     * that someone may use both the old and the new allowance by unfortunate
     * transaction ordering. One possible solution to mitigate this race
     * condition is to first reduce the spender's allowance to 0 and set the
     * desired value afterwards:
     * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
     *
     * Emits an {Approval} event.
     */
    function approve(address spender, uint256 amount) external returns (bool);

    /**
     * @dev Moves `amount` tokens from `sender` to `recipient` using the
     * allowance mechanism. `amount` is then deducted from the caller's
     * allowance.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * Emits a {Transfer} event.
     */
    function transferFrom(address sender, address recipient, uint256 amount) external returns (bool);

    /**
     * @dev Emitted when `value` tokens are moved from one account (`from`) to
     * another (`to`).
     *
     * Note that `value` may be zero.
     */
    event Transfer(address indexed from, address indexed to, uint256 value);

    /**
     * @dev Emitted when the allowance of a `spender` for an `owner` is set by
     * a call to {approve}. `value` is the new allowance.
     */
    event Approval(address indexed owner, address indexed spender, uint256 value);
}


// Dependency file: @openzeppelin/contracts/math/SafeMath.sol


// pragma solidity ^0.7.0;

/**
 * @dev Wrappers over Solidity's arithmetic operations with added overflow
 * checks.
 *
 * Arithmetic operations in Solidity wrap on overflow. This can easily result
 * in bugs, because programmers usually assume that an overflow raises an
 * error, which is the standard behavior in high level programming languages.
 * `SafeMath` restores this intuition by reverting the transaction when an
 * operation overflows.
 *
 * Using this library instead of the unchecked operations eliminates an entire
 * class of bugs, so it's recommended to use it always.
 */
library SafeMath {
    /**
     * @dev Returns the addition of two unsigned integers, with an overflow flag.
     *
     * _Available since v3.4._
     */
    function tryAdd(uint256 a, uint256 b) internal pure returns (bool, uint256) {
        uint256 c = a + b;
        if (c < a) return (false, 0);
        return (true, c);
    }

    /**
     * @dev Returns the substraction of two unsigned integers, with an overflow flag.
     *
     * _Available since v3.4._
     */
    function trySub(uint256 a, uint256 b) internal pure returns (bool, uint256) {
        if (b > a) return (false, 0);
        return (true, a - b);
    }

    /**
     * @dev Returns the multiplication of two unsigned integers, with an overflow flag.
     *
     * _Available since v3.4._
     */
    function tryMul(uint256 a, uint256 b) internal pure returns (bool, uint256) {
        // Gas optimization: this is cheaper than requiring 'a' not being zero, but the
        // benefit is lost if 'b' is also tested.
        // See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522
        if (a == 0) return (true, 0);
        uint256 c = a * b;
        if (c / a != b) return (false, 0);
        return (true, c);
    }

    /**
     * @dev Returns the division of two unsigned integers, with a division by zero flag.
     *
     * _Available since v3.4._
     */
    function tryDiv(uint256 a, uint256 b) internal pure returns (bool, uint256) {
        if (b == 0) return (false, 0);
        return (true, a / b);
    }

    /**
     * @dev Returns the remainder of dividing two unsigned integers, with a division by zero flag.
     *
     * _Available since v3.4._
     */
    function tryMod(uint256 a, uint256 b) internal pure returns (bool, uint256) {
        if (b == 0) return (false, 0);
        return (true, a % b);
    }

    /**
     * @dev Returns the addition of two unsigned integers, reverting on
     * overflow.
     *
     * Counterpart to Solidity's `+` operator.
     *
     * Requirements:
     *
     * - Addition cannot overflow.
     */
    function add(uint256 a, uint256 b) internal pure returns (uint256) {
        uint256 c = a + b;
        require(c >= a, "SafeMath: addition overflow");
        return c;
    }

    /**
     * @dev Returns the subtraction of two unsigned integers, reverting on
     * overflow (when the result is negative).
     *
     * Counterpart to Solidity's `-` operator.
     *
     * Requirements:
     *
     * - Subtraction cannot overflow.
     */
    function sub(uint256 a, uint256 b) internal pure returns (uint256) {
        require(b <= a, "SafeMath: subtraction overflow");
        return a - b;
    }

    /**
     * @dev Returns the multiplication of two unsigned integers, reverting on
     * overflow.
     *
     * Counterpart to Solidity's `*` operator.
     *
     * Requirements:
     *
     * - Multiplication cannot overflow.
     */
    function mul(uint256 a, uint256 b) internal pure returns (uint256) {
        if (a == 0) return 0;
        uint256 c = a * b;
        require(c / a == b, "SafeMath: multiplication overflow");
        return c;
    }

    /**
     * @dev Returns the integer division of two unsigned integers, reverting on
     * division by zero. The result is rounded towards zero.
     *
     * Counterpart to Solidity's `/` operator. Note: this function uses a
     * `revert` opcode (which leaves remaining gas untouched) while Solidity
     * uses an invalid opcode to revert (consuming all remaining gas).
     *
     * Requirements:
     *
     * - The divisor cannot be zero.
     */
    function div(uint256 a, uint256 b) internal pure returns (uint256) {
        require(b > 0, "SafeMath: division by zero");
        return a / b;
    }

    /**
     * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
     * reverting when dividing by zero.
     *
     * Counterpart to Solidity's `%` operator. This function uses a `revert`
     * opcode (which leaves remaining gas untouched) while Solidity uses an
     * invalid opcode to revert (consuming all remaining gas).
     *
     * Requirements:
     *
     * - The divisor cannot be zero.
     */
    function mod(uint256 a, uint256 b) internal pure returns (uint256) {
        require(b > 0, "SafeMath: modulo by zero");
        return a % b;
    }

    /**
     * @dev Returns the subtraction of two unsigned integers, reverting with custom message on
     * overflow (when the result is negative).
     *
     * CAUTION: This function is deprecated because it requires allocating memory for the error
     * message unnecessarily. For custom revert reasons use {trySub}.
     *
     * Counterpart to Solidity's `-` operator.
     *
     * Requirements:
     *
     * - Subtraction cannot overflow.
     */
    function sub(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
        require(b <= a, errorMessage);
        return a - b;
    }

    /**
     * @dev Returns the integer division of two unsigned integers, reverting with custom message on
     * division by zero. The result is rounded towards zero.
     *
     * CAUTION: This function is deprecated because it requires allocating memory for the error
     * message unnecessarily. For custom revert reasons use {tryDiv}.
     *
     * Counterpart to Solidity's `/` operator. Note: this function uses a
     * `revert` opcode (which leaves remaining gas untouched) while Solidity
     * uses an invalid opcode to revert (consuming all remaining gas).
     *
     * Requirements:
     *
     * - The divisor cannot be zero.
     */
    function div(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
        require(b > 0, errorMessage);
        return a / b;
    }

    /**
     * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
     * reverting with custom message when dividing by zero.
     *
     * CAUTION: This function is deprecated because it requires allocating memory for the error
     * message unnecessarily. For custom revert reasons use {tryMod}.
     *
     * Counterpart to Solidity's `%` operator. This function uses a `revert`
     * opcode (which leaves remaining gas untouched) while Solidity uses an
     * invalid opcode to revert (consuming all remaining gas).
     *
     * Requirements:
     *
     * - The divisor cannot be zero.
     */
    function mod(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
        require(b > 0, errorMessage);
        return a % b;
    }
}


// Dependency file: @openzeppelin/contracts/token/ERC20/ERC20.sol


// pragma solidity ^0.7.0;

// import "@openzeppelin/contracts/utils/Context.sol";
// import "@openzeppelin/contracts/token/ERC20/IERC20.sol";
// import "@openzeppelin/contracts/math/SafeMath.sol";

/**
 * @dev Implementation of the {IERC20} interface.
 *
 * This implementation is agnostic to the way tokens are created. This means
 * that a supply mechanism has to be added in a derived contract using {_mint}.
 * For a generic mechanism see {ERC20PresetMinterPauser}.
 *
 * TIP: For a detailed writeup see our guide
 * https://forum.zeppelin.solutions/t/how-to-implement-erc20-supply-mechanisms/226[How
 * to implement supply mechanisms].
 *
 * We have followed general OpenZeppelin guidelines: functions revert instead
 * of returning `false` on failure. This behavior is nonetheless conventional
 * and does not conflict with the expectations of ERC20 applications.
 *
 * Additionally, an {Approval} event is emitted on calls to {transferFrom}.
 * This allows applications to reconstruct the allowance for all accounts just
 * by listening to said events. Other implementations of the EIP may not emit
 * these events, as it isn't required by the specification.
 *
 * Finally, the non-standard {decreaseAllowance} and {increaseAllowance}
 * functions have been added to mitigate the well-known issues around setting
 * allowances. See {IERC20-approve}.
 */
contract ERC20 is Context, IERC20 {
    using SafeMath for uint256;

    mapping (address => uint256) private _balances;

    mapping (address => mapping (address => uint256)) private _allowances;

    uint256 private _totalSupply;

    string private _name;
    string private _symbol;
    uint8 private _decimals;

    /**
     * @dev Sets the values for {name} and {symbol}, initializes {decimals} with
     * a default value of 18.
     *
     * To select a different value for {decimals}, use {_setupDecimals}.
     *
     * All three of these values are immutable: they can only be set once during
     * construction.
     */
    constructor (string memory name_, string memory symbol_) {
        _name = name_;
        _symbol = symbol_;
        _decimals = 18;
    }

    /**
     * @dev Returns the name of the token.
     */
    function name() public view virtual returns (string memory) {
        return _name;
    }

    /**
     * @dev Returns the symbol of the token, usually a shorter version of the
     * name.
     */
    function symbol() public view virtual returns (string memory) {
        return _symbol;
    }

    /**
     * @dev Returns the number of decimals used to get its user representation.
     * For example, if `decimals` equals `2`, a balance of `505` tokens should
     * be displayed to a user as `5,05` (`505 / 10 ** 2`).
     *
     * Tokens usually opt for a value of 18, imitating the relationship between
     * Ether and Wei. This is the value {ERC20} uses, unless {_setupDecimals} is
     * called.
     *
     * NOTE: This information is only used for _display_ purposes: it in
     * no way affects any of the arithmetic of the contract, including
     * {IERC20-balanceOf} and {IERC20-transfer}.
     */
    function decimals() public view virtual returns (uint8) {
        return _decimals;
    }

    /**
     * @dev See {IERC20-totalSupply}.
     */
    function totalSupply() public view virtual override returns (uint256) {
        return _totalSupply;
    }

    /**
     * @dev See {IERC20-balanceOf}.
     */
    function balanceOf(address account) public view virtual override returns (uint256) {
        return _balances[account];
    }

    /**
     * @dev See {IERC20-transfer}.
     *
     * Requirements:
     *
     * - `recipient` cannot be the zero address.
     * - the caller must have a balance of at least `amount`.
     */
    function transfer(address recipient, uint256 amount) public virtual override returns (bool) {
        _transfer(_msgSender(), recipient, amount);
        return true;
    }

    /**
     * @dev See {IERC20-allowance}.
     */
    function allowance(address owner, address spender) public view virtual override returns (uint256) {
        return _allowances[owner][spender];
    }

    /**
     * @dev See {IERC20-approve}.
     *
     * Requirements:
     *
     * - `spender` cannot be the zero address.
     */
    function approve(address spender, uint256 amount) public virtual override returns (bool) {
        _approve(_msgSender(), spender, amount);
        return true;
    }

    /**
     * @dev See {IERC20-transferFrom}.
     *
     * Emits an {Approval} event indicating the updated allowance. This is not
     * required by the EIP. See the note at the beginning of {ERC20}.
     *
     * Requirements:
     *
     * - `sender` and `recipient` cannot be the zero address.
     * - `sender` must have a balance of at least `amount`.
     * - the caller must have allowance for ``sender``'s tokens of at least
     * `amount`.
     */
    function transferFrom(address sender, address recipient, uint256 amount) public virtual override returns (bool) {
        _transfer(sender, recipient, amount);
        _approve(sender, _msgSender(), _allowances[sender][_msgSender()].sub(amount, "ERC20: transfer amount exceeds allowance"));
        return true;
    }

    /**
     * @dev Atomically increases the allowance granted to `spender` by the caller.
     *
     * This is an alternative to {approve} that can be used as a mitigation for
     * problems described in {IERC20-approve}.
     *
     * Emits an {Approval} event indicating the updated allowance.
     *
     * Requirements:
     *
     * - `spender` cannot be the zero address.
     */
    function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) {
        _approve(_msgSender(), spender, _allowances[_msgSender()][spender].add(addedValue));
        return true;
    }

    /**
     * @dev Atomically decreases the allowance granted to `spender` by the caller.
     *
     * This is an alternative to {approve} that can be used as a mitigation for
     * problems described in {IERC20-approve}.
     *
     * Emits an {Approval} event indicating the updated allowance.
     *
     * Requirements:
     *
     * - `spender` cannot be the zero address.
     * - `spender` must have allowance for the caller of at least
     * `subtractedValue`.
     */
    function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) {
        _approve(_msgSender(), spender, _allowances[_msgSender()][spender].sub(subtractedValue, "ERC20: decreased allowance below zero"));
        return true;
    }

    /**
     * @dev Moves tokens `amount` from `sender` to `recipient`.
     *
     * This is internal function is equivalent to {transfer}, and can be used to
     * e.g. implement automatic token fees, slashing mechanisms, etc.
     *
     * Emits a {Transfer} event.
     *
     * Requirements:
     *
     * - `sender` cannot be the zero address.
     * - `recipient` cannot be the zero address.
     * - `sender` must have a balance of at least `amount`.
     */
    function _transfer(address sender, address recipient, uint256 amount) internal virtual {
        require(sender != address(0), "ERC20: transfer from the zero address");
        require(recipient != address(0), "ERC20: transfer to the zero address");

        _beforeTokenTransfer(sender, recipient, amount);

        _balances[sender] = _balances[sender].sub(amount, "ERC20: transfer amount exceeds balance");
        _balances[recipient] = _balances[recipient].add(amount);
        emit Transfer(sender, recipient, amount);
    }

    /** @dev Creates `amount` tokens and assigns them to `account`, increasing
     * the total supply.
     *
     * Emits a {Transfer} event with `from` set to the zero address.
     *
     * Requirements:
     *
     * - `to` cannot be the zero address.
     */
    function _mint(address account, uint256 amount) internal virtual {
        require(account != address(0), "ERC20: mint to the zero address");

        _beforeTokenTransfer(address(0), account, amount);

        _totalSupply = _totalSupply.add(amount);
        _balances[account] = _balances[account].add(amount);
        emit Transfer(address(0), account, amount);
    }

    /**
     * @dev Destroys `amount` tokens from `account`, reducing the
     * total supply.
     *
     * Emits a {Transfer} event with `to` set to the zero address.
     *
     * Requirements:
     *
     * - `account` cannot be the zero address.
     * - `account` must have at least `amount` tokens.
     */
    function _burn(address account, uint256 amount) internal virtual {
        require(account != address(0), "ERC20: burn from the zero address");

        _beforeTokenTransfer(account, address(0), amount);

        _balances[account] = _balances[account].sub(amount, "ERC20: burn amount exceeds balance");
        _totalSupply = _totalSupply.sub(amount);
        emit Transfer(account, address(0), amount);
    }

    /**
     * @dev Sets `amount` as the allowance of `spender` over the `owner` s tokens.
     *
     * This internal function is equivalent to `approve`, and can be used to
     * e.g. set automatic allowances for certain subsystems, etc.
     *
     * Emits an {Approval} event.
     *
     * Requirements:
     *
     * - `owner` cannot be the zero address.
     * - `spender` cannot be the zero address.
     */
    function _approve(address owner, address spender, uint256 amount) internal virtual {
        require(owner != address(0), "ERC20: approve from the zero address");
        require(spender != address(0), "ERC20: approve to the zero address");

        _allowances[owner][spender] = amount;
        emit Approval(owner, spender, amount);
    }

    /**
     * @dev Sets {decimals} to a value other than the default one of 18.
     *
     * WARNING: This function should only be called from the constructor. Most
     * applications that interact with token contracts will not expect
     * {decimals} to ever change, and may work incorrectly if it does.
     */
    function _setupDecimals(uint8 decimals_) internal virtual {
        _decimals = decimals_;
    }

    /**
     * @dev Hook that is called before any transfer of tokens. This includes
     * minting and burning.
     *
     * Calling conditions:
     *
     * - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens
     * will be to transferred to `to`.
     * - when `from` is zero, `amount` tokens will be minted for `to`.
     * - when `to` is zero, `amount` of ``from``'s tokens will be burned.
     * - `from` and `to` are never both zero.
     *
     * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
     */
    function _beforeTokenTransfer(address from, address to, uint256 amount) internal virtual { }
}


// Dependency file: @openzeppelin/contracts-upgradeable/utils/AddressUpgradeable.sol


// pragma solidity >=0.6.2 <0.8.0;

/**
 * @dev Collection of functions related to the address type
 */
library AddressUpgradeable {
    /**
     * @dev Returns true if `account` is a contract.
     *
     * [IMPORTANT]
     * ====
     * It is unsafe to assume that an address for which this function returns
     * false is an externally-owned account (EOA) and not a contract.
     *
     * Among others, `isContract` will return false for the following
     * types of addresses:
     *
     *  - an externally-owned account
     *  - a contract in construction
     *  - an address where a contract will be created
     *  - an address where a contract lived, but was destroyed
     * ====
     */
    function isContract(address account) internal view returns (bool) {
        // This method relies on extcodesize, which returns 0 for contracts in
        // construction, since the code is only stored at the end of the
        // constructor execution.

        uint256 size;
        // solhint-disable-next-line no-inline-assembly
        assembly { size := extcodesize(account) }
        return size > 0;
    }

    /**
     * @dev Replacement for Solidity's `transfer`: sends `amount` wei to
     * `recipient`, forwarding all available gas and reverting on errors.
     *
     * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost
     * of certain opcodes, possibly making contracts go over the 2300 gas limit
     * imposed by `transfer`, making them unable to receive funds via
     * `transfer`. {sendValue} removes this limitation.
     *
     * https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more].
     *
     * IMPORTANT: because control is transferred to `recipient`, care must be
     * taken to not create reentrancy vulnerabilities. Consider using
     * {ReentrancyGuard} or the
     * https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].
     */
    function sendValue(address payable recipient, uint256 amount) internal {
        require(address(this).balance >= amount, "Address: insufficient balance");

        // solhint-disable-next-line avoid-low-level-calls, avoid-call-value
        (bool success, ) = recipient.call{ value: amount }("");
        require(success, "Address: unable to send value, recipient may have reverted");
    }

    /**
     * @dev Performs a Solidity function call using a low level `call`. A
     * plain`call` is an unsafe replacement for a function call: use this
     * function instead.
     *
     * If `target` reverts with a revert reason, it is bubbled up by this
     * function (like regular Solidity function calls).
     *
     * Returns the raw returned data. To convert to the expected return value,
     * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`].
     *
     * Requirements:
     *
     * - `target` must be a contract.
     * - calling `target` with `data` must not revert.
     *
     * _Available since v3.1._
     */
    function functionCall(address target, bytes memory data) internal returns (bytes memory) {
      return functionCall(target, data, "Address: low-level call failed");
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with
     * `errorMessage` as a fallback revert reason when `target` reverts.
     *
     * _Available since v3.1._
     */
    function functionCall(address target, bytes memory data, string memory errorMessage) internal returns (bytes memory) {
        return functionCallWithValue(target, data, 0, errorMessage);
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
     * but also transferring `value` wei to `target`.
     *
     * Requirements:
     *
     * - the calling contract must have an ETH balance of at least `value`.
     * - the called Solidity function must be `payable`.
     *
     * _Available since v3.1._
     */
    function functionCallWithValue(address target, bytes memory data, uint256 value) internal returns (bytes memory) {
        return functionCallWithValue(target, data, value, "Address: low-level call with value failed");
    }

    /**
     * @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but
     * with `errorMessage` as a fallback revert reason when `target` reverts.
     *
     * _Available since v3.1._
     */
    function functionCallWithValue(address target, bytes memory data, uint256 value, string memory errorMessage) internal returns (bytes memory) {
        require(address(this).balance >= value, "Address: insufficient balance for call");
        require(isContract(target), "Address: call to non-contract");

        // solhint-disable-next-line avoid-low-level-calls
        (bool success, bytes memory returndata) = target.call{ value: value }(data);
        return _verifyCallResult(success, returndata, errorMessage);
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
     * but performing a static call.
     *
     * _Available since v3.3._
     */
    function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) {
        return functionStaticCall(target, data, "Address: low-level static call failed");
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
     * but performing a static call.
     *
     * _Available since v3.3._
     */
    function functionStaticCall(address target, bytes memory data, string memory errorMessage) internal view returns (bytes memory) {
        require(isContract(target), "Address: static call to non-contract");

        // solhint-disable-next-line avoid-low-level-calls
        (bool success, bytes memory returndata) = target.staticcall(data);
        return _verifyCallResult(success, returndata, errorMessage);
    }

    function _verifyCallResult(bool success, bytes memory returndata, string memory errorMessage) private pure returns(bytes memory) {
        if (success) {
            return returndata;
        } else {
            // Look for revert reason and bubble it up if present
            if (returndata.length > 0) {
                // The easiest way to bubble the revert reason is using memory via assembly

                // solhint-disable-next-line no-inline-assembly
                assembly {
                    let returndata_size := mload(returndata)
                    revert(add(32, returndata), returndata_size)
                }
            } else {
                revert(errorMessage);
            }
        }
    }
}


// Dependency file: @openzeppelin/contracts-upgradeable/proxy/Initializable.sol


// solhint-disable-next-line compiler-version
// pragma solidity >=0.4.24 <0.8.0;

// import "@openzeppelin/contracts-upgradeable/utils/AddressUpgradeable.sol";

/**
 * @dev This is a base contract to aid in writing upgradeable contracts, or any kind of contract that will be deployed
 * behind a proxy. Since a proxied contract can't have a constructor, it's common to move constructor logic to an
 * external initializer function, usually called `initialize`. It then becomes necessary to protect this initializer
 * function so it can only be called once. The {initializer} modifier provided by this contract will have this effect.
 *
 * TIP: To avoid leaving the proxy in an uninitialized state, the initializer function should be called as early as
 * possible by providing the encoded function call as the `_data` argument to {UpgradeableProxy-constructor}.
 *
 * CAUTION: When used with inheritance, manual care must be taken to not invoke a parent initializer twice, or to ensure
 * that all initializers are idempotent. This is not verified automatically as constructors are by Solidity.
 */
abstract contract Initializable {

    /**
     * @dev Indicates that the contract has been initialized.
     */
    bool private _initialized;

    /**
     * @dev Indicates that the contract is in the process of being initialized.
     */
    bool private _initializing;

    /**
     * @dev Modifier to protect an initializer function from being invoked twice.
     */
    modifier initializer() {
        require(_initializing || _isConstructor() || !_initialized, "Initializable: contract is already initialized");

        bool isTopLevelCall = !_initializing;
        if (isTopLevelCall) {
            _initializing = true;
            _initialized = true;
        }

        _;

        if (isTopLevelCall) {
            _initializing = false;
        }
    }

    /// @dev Returns true if and only if the function is running in the constructor
    function _isConstructor() private view returns (bool) {
        return !AddressUpgradeable.isContract(address(this));
    }
}


// Dependency file: @openzeppelin/contracts-upgradeable/utils/ContextUpgradeable.sol


// pragma solidity >=0.6.0 <0.8.0;
// import "@openzeppelin/contracts-upgradeable/proxy/Initializable.sol";

/*
 * @dev Provides information about the current execution context, including the
 * sender of the transaction and its data. While these are generally available
 * via msg.sender and msg.data, they should not be accessed in such a direct
 * manner, since when dealing with GSN meta-transactions the account sending and
 * paying for execution may not be the actual sender (as far as an application
 * is concerned).
 *
 * This contract is only required for intermediate, library-like contracts.
 */
abstract contract ContextUpgradeable is Initializable {
    function __Context_init() internal initializer {
        __Context_init_unchained();
    }

    function __Context_init_unchained() internal initializer {
    }
    function _msgSender() internal view virtual returns (address payable) {
        return msg.sender;
    }

    function _msgData() internal view virtual returns (bytes memory) {
        this; // silence state mutability warning without generating bytecode - see https://github.com/ethereum/solidity/issues/2691
        return msg.data;
    }
    uint256[50] private __gap;
}


// Dependency file: @openzeppelin/contracts-upgradeable/token/ERC20/IERC20Upgradeable.sol


// pragma solidity >=0.6.0 <0.8.0;

/**
 * @dev Interface of the ERC20 standard as defined in the EIP.
 */
interface IERC20Upgradeable {
    /**
     * @dev Returns the amount of tokens in existence.
     */
    function totalSupply() external view returns (uint256);

    /**
     * @dev Returns the amount of tokens owned by `account`.
     */
    function balanceOf(address account) external view returns (uint256);

    /**
     * @dev Moves `amount` tokens from the caller's account to `recipient`.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * Emits a {Transfer} event.
     */
    function transfer(address recipient, uint256 amount) external returns (bool);

    /**
     * @dev Returns the remaining number of tokens that `spender` will be
     * allowed to spend on behalf of `owner` through {transferFrom}. This is
     * zero by default.
     *
     * This value changes when {approve} or {transferFrom} are called.
     */
    function allowance(address owner, address spender) external view returns (uint256);

    /**
     * @dev Sets `amount` as the allowance of `spender` over the caller's tokens.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * IMPORTANT: Beware that changing an allowance with this method brings the risk
     * that someone may use both the old and the new allowance by unfortunate
     * transaction ordering. One possible solution to mitigate this race
     * condition is to first reduce the spender's allowance to 0 and set the
     * desired value afterwards:
     * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
     *
     * Emits an {Approval} event.
     */
    function approve(address spender, uint256 amount) external returns (bool);

    /**
     * @dev Moves `amount` tokens from `sender` to `recipient` using the
     * allowance mechanism. `amount` is then deducted from the caller's
     * allowance.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * Emits a {Transfer} event.
     */
    function transferFrom(address sender, address recipient, uint256 amount) external returns (bool);

    /**
     * @dev Emitted when `value` tokens are moved from one account (`from`) to
     * another (`to`).
     *
     * Note that `value` may be zero.
     */
    event Transfer(address indexed from, address indexed to, uint256 value);

    /**
     * @dev Emitted when the allowance of a `spender` for an `owner` is set by
     * a call to {approve}. `value` is the new allowance.
     */
    event Approval(address indexed owner, address indexed spender, uint256 value);
}


// Dependency file: @openzeppelin/contracts-upgradeable/math/SafeMathUpgradeable.sol


// pragma solidity >=0.6.0 <0.8.0;

/**
 * @dev Wrappers over Solidity's arithmetic operations with added overflow
 * checks.
 *
 * Arithmetic operations in Solidity wrap on overflow. This can easily result
 * in bugs, because programmers usually assume that an overflow raises an
 * error, which is the standard behavior in high level programming languages.
 * `SafeMath` restores this intuition by reverting the transaction when an
 * operation overflows.
 *
 * Using this library instead of the unchecked operations eliminates an entire
 * class of bugs, so it's recommended to use it always.
 */
library SafeMathUpgradeable {
    /**
     * @dev Returns the addition of two unsigned integers, with an overflow flag.
     *
     * _Available since v3.4._
     */
    function tryAdd(uint256 a, uint256 b) internal pure returns (bool, uint256) {
        uint256 c = a + b;
        if (c < a) return (false, 0);
        return (true, c);
    }

    /**
     * @dev Returns the substraction of two unsigned integers, with an overflow flag.
     *
     * _Available since v3.4._
     */
    function trySub(uint256 a, uint256 b) internal pure returns (bool, uint256) {
        if (b > a) return (false, 0);
        return (true, a - b);
    }

    /**
     * @dev Returns the multiplication of two unsigned integers, with an overflow flag.
     *
     * _Available since v3.4._
     */
    function tryMul(uint256 a, uint256 b) internal pure returns (bool, uint256) {
        // Gas optimization: this is cheaper than requiring 'a' not being zero, but the
        // benefit is lost if 'b' is also tested.
        // See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522
        if (a == 0) return (true, 0);
        uint256 c = a * b;
        if (c / a != b) return (false, 0);
        return (true, c);
    }

    /**
     * @dev Returns the division of two unsigned integers, with a division by zero flag.
     *
     * _Available since v3.4._
     */
    function tryDiv(uint256 a, uint256 b) internal pure returns (bool, uint256) {
        if (b == 0) return (false, 0);
        return (true, a / b);
    }

    /**
     * @dev Returns the remainder of dividing two unsigned integers, with a division by zero flag.
     *
     * _Available since v3.4._
     */
    function tryMod(uint256 a, uint256 b) internal pure returns (bool, uint256) {
        if (b == 0) return (false, 0);
        return (true, a % b);
    }

    /**
     * @dev Returns the addition of two unsigned integers, reverting on
     * overflow.
     *
     * Counterpart to Solidity's `+` operator.
     *
     * Requirements:
     *
     * - Addition cannot overflow.
     */
    function add(uint256 a, uint256 b) internal pure returns (uint256) {
        uint256 c = a + b;
        require(c >= a, "SafeMath: addition overflow");
        return c;
    }

    /**
     * @dev Returns the subtraction of two unsigned integers, reverting on
     * overflow (when the result is negative).
     *
     * Counterpart to Solidity's `-` operator.
     *
     * Requirements:
     *
     * - Subtraction cannot overflow.
     */
    function sub(uint256 a, uint256 b) internal pure returns (uint256) {
        require(b <= a, "SafeMath: subtraction overflow");
        return a - b;
    }

    /**
     * @dev Returns the multiplication of two unsigned integers, reverting on
     * overflow.
     *
     * Counterpart to Solidity's `*` operator.
     *
     * Requirements:
     *
     * - Multiplication cannot overflow.
     */
    function mul(uint256 a, uint256 b) internal pure returns (uint256) {
        if (a == 0) return 0;
        uint256 c = a * b;
        require(c / a == b, "SafeMath: multiplication overflow");
        return c;
    }

    /**
     * @dev Returns the integer division of two unsigned integers, reverting on
     * division by zero. The result is rounded towards zero.
     *
     * Counterpart to Solidity's `/` operator. Note: this function uses a
     * `revert` opcode (which leaves remaining gas untouched) while Solidity
     * uses an invalid opcode to revert (consuming all remaining gas).
     *
     * Requirements:
     *
     * - The divisor cannot be zero.
     */
    function div(uint256 a, uint256 b) internal pure returns (uint256) {
        require(b > 0, "SafeMath: division by zero");
        return a / b;
    }

    /**
     * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
     * reverting when dividing by zero.
     *
     * Counterpart to Solidity's `%` operator. This function uses a `revert`
     * opcode (which leaves remaining gas untouched) while Solidity uses an
     * invalid opcode to revert (consuming all remaining gas).
     *
     * Requirements:
     *
     * - The divisor cannot be zero.
     */
    function mod(uint256 a, uint256 b) internal pure returns (uint256) {
        require(b > 0, "SafeMath: modulo by zero");
        return a % b;
    }

    /**
     * @dev Returns the subtraction of two unsigned integers, reverting with custom message on
     * overflow (when the result is negative).
     *
     * CAUTION: This function is deprecated because it requires allocating memory for the error
     * message unnecessarily. For custom revert reasons use {trySub}.
     *
     * Counterpart to Solidity's `-` operator.
     *
     * Requirements:
     *
     * - Subtraction cannot overflow.
     */
    function sub(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
        require(b <= a, errorMessage);
        return a - b;
    }

    /**
     * @dev Returns the integer division of two unsigned integers, reverting with custom message on
     * division by zero. The result is rounded towards zero.
     *
     * CAUTION: This function is deprecated because it requires allocating memory for the error
     * message unnecessarily. For custom revert reasons use {tryDiv}.
     *
     * Counterpart to Solidity's `/` operator. Note: this function uses a
     * `revert` opcode (which leaves remaining gas untouched) while Solidity
     * uses an invalid opcode to revert (consuming all remaining gas).
     *
     * Requirements:
     *
     * - The divisor cannot be zero.
     */
    function div(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
        require(b > 0, errorMessage);
        return a / b;
    }

    /**
     * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
     * reverting with custom message when dividing by zero.
     *
     * CAUTION: This function is deprecated because it requires allocating memory for the error
     * message unnecessarily. For custom revert reasons use {tryMod}.
     *
     * Counterpart to Solidity's `%` operator. This function uses a `revert`
     * opcode (which leaves remaining gas untouched) while Solidity uses an
     * invalid opcode to revert (consuming all remaining gas).
     *
     * Requirements:
     *
     * - The divisor cannot be zero.
     */
    function mod(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
        require(b > 0, errorMessage);
        return a % b;
    }
}


// Dependency file: @openzeppelin/contracts-upgradeable/token/ERC20/ERC20Upgradeable.sol


// pragma solidity >=0.6.0 <0.8.0;

// import "@openzeppelin/contracts-upgradeable/utils/ContextUpgradeable.sol";
// import "@openzeppelin/contracts-upgradeable/token/ERC20/IERC20Upgradeable.sol";
// import "@openzeppelin/contracts-upgradeable/math/SafeMathUpgradeable.sol";
// import "@openzeppelin/contracts-upgradeable/proxy/Initializable.sol";

/**
 * @dev Implementation of the {IERC20} interface.
 *
 * This implementation is agnostic to the way tokens are created. This means
 * that a supply mechanism has to be added in a derived contract using {_mint}.
 * For a generic mechanism see {ERC20PresetMinterPauser}.
 *
 * TIP: For a detailed writeup see our guide
 * https://forum.zeppelin.solutions/t/how-to-implement-erc20-supply-mechanisms/226[How
 * to implement supply mechanisms].
 *
 * We have followed general OpenZeppelin guidelines: functions revert instead
 * of returning `false` on failure. This behavior is nonetheless conventional
 * and does not conflict with the expectations of ERC20 applications.
 *
 * Additionally, an {Approval} event is emitted on calls to {transferFrom}.
 * This allows applications to reconstruct the allowance for all accounts just
 * by listening to said events. Other implementations of the EIP may not emit
 * these events, as it isn't required by the specification.
 *
 * Finally, the non-standard {decreaseAllowance} and {increaseAllowance}
 * functions have been added to mitigate the well-known issues around setting
 * allowances. See {IERC20-approve}.
 */
contract ERC20Upgradeable is Initializable, ContextUpgradeable, IERC20Upgradeable {
    using SafeMathUpgradeable for uint256;

    mapping (address => uint256) private _balances;

    mapping (address => mapping (address => uint256)) private _allowances;

    uint256 private _totalSupply;

    string private _name;
    string private _symbol;
    uint8 private _decimals;

    /**
     * @dev Sets the values for {name} and {symbol}, initializes {decimals} with
     * a default value of 18.
     *
     * To select a different value for {decimals}, use {_setupDecimals}.
     *
     * All three of these values are immutable: they can only be set once during
     * construction.
     */
    function __ERC20_init(string memory name_, string memory symbol_) internal initializer {
        __Context_init_unchained();
        __ERC20_init_unchained(name_, symbol_);
    }

    function __ERC20_init_unchained(string memory name_, string memory symbol_) internal initializer {
        _name = name_;
        _symbol = symbol_;
        _decimals = 18;
    }

    /**
     * @dev Returns the name of the token.
     */
    function name() public view virtual returns (string memory) {
        return _name;
    }

    /**
     * @dev Returns the symbol of the token, usually a shorter version of the
     * name.
     */
    function symbol() public view virtual returns (string memory) {
        return _symbol;
    }

    /**
     * @dev Returns the number of decimals used to get its user representation.
     * For example, if `decimals` equals `2`, a balance of `505` tokens should
     * be displayed to a user as `5,05` (`505 / 10 ** 2`).
     *
     * Tokens usually opt for a value of 18, imitating the relationship between
     * Ether and Wei. This is the value {ERC20} uses, unless {_setupDecimals} is
     * called.
     *
     * NOTE: This information is only used for _display_ purposes: it in
     * no way affects any of the arithmetic of the contract, including
     * {IERC20-balanceOf} and {IERC20-transfer}.
     */
    function decimals() public view virtual returns (uint8) {
        return _decimals;
    }

    /**
     * @dev See {IERC20-totalSupply}.
     */
    function totalSupply() public view virtual override returns (uint256) {
        return _totalSupply;
    }

    /**
     * @dev See {IERC20-balanceOf}.
     */
    function balanceOf(address account) public view virtual override returns (uint256) {
        return _balances[account];
    }

    /**
     * @dev See {IERC20-transfer}.
     *
     * Requirements:
     *
     * - `recipient` cannot be the zero address.
     * - the caller must have a balance of at least `amount`.
     */
    function transfer(address recipient, uint256 amount) public virtual override returns (bool) {
        _transfer(_msgSender(), recipient, amount);
        return true;
    }

    /**
     * @dev See {IERC20-allowance}.
     */
    function allowance(address owner, address spender) public view virtual override returns (uint256) {
        return _allowances[owner][spender];
    }

    /**
     * @dev See {IERC20-approve}.
     *
     * Requirements:
     *
     * - `spender` cannot be the zero address.
     */
    function approve(address spender, uint256 amount) public virtual override returns (bool) {
        _approve(_msgSender(), spender, amount);
        return true;
    }

    /**
     * @dev See {IERC20-transferFrom}.
     *
     * Emits an {Approval} event indicating the updated allowance. This is not
     * required by the EIP. See the note at the beginning of {ERC20}.
     *
     * Requirements:
     *
     * - `sender` and `recipient` cannot be the zero address.
     * - `sender` must have a balance of at least `amount`.
     * - the caller must have allowance for ``sender``'s tokens of at least
     * `amount`.
     */
    function transferFrom(address sender, address recipient, uint256 amount) public virtual override returns (bool) {
        _transfer(sender, recipient, amount);
        _approve(sender, _msgSender(), _allowances[sender][_msgSender()].sub(amount, "ERC20: transfer amount exceeds allowance"));
        return true;
    }

    /**
     * @dev Atomically increases the allowance granted to `spender` by the caller.
     *
     * This is an alternative to {approve} that can be used as a mitigation for
     * problems described in {IERC20-approve}.
     *
     * Emits an {Approval} event indicating the updated allowance.
     *
     * Requirements:
     *
     * - `spender` cannot be the zero address.
     */
    function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) {
        _approve(_msgSender(), spender, _allowances[_msgSender()][spender].add(addedValue));
        return true;
    }

    /**
     * @dev Atomically decreases the allowance granted to `spender` by the caller.
     *
     * This is an alternative to {approve} that can be used as a mitigation for
     * problems described in {IERC20-approve}.
     *
     * Emits an {Approval} event indicating the updated allowance.
     *
     * Requirements:
     *
     * - `spender` cannot be the zero address.
     * - `spender` must have allowance for the caller of at least
     * `subtractedValue`.
     */
    function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) {
        _approve(_msgSender(), spender, _allowances[_msgSender()][spender].sub(subtractedValue, "ERC20: decreased allowance below zero"));
        return true;
    }

    /**
     * @dev Moves tokens `amount` from `sender` to `recipient`.
     *
     * This is internal function is equivalent to {transfer}, and can be used to
     * e.g. implement automatic token fees, slashing mechanisms, etc.
     *
     * Emits a {Transfer} event.
     *
     * Requirements:
     *
     * - `sender` cannot be the zero address.
     * - `recipient` cannot be the zero address.
     * - `sender` must have a balance of at least `amount`.
     */
    function _transfer(address sender, address recipient, uint256 amount) internal virtual {
        require(sender != address(0), "ERC20: transfer from the zero address");
        require(recipient != address(0), "ERC20: transfer to the zero address");

        _beforeTokenTransfer(sender, recipient, amount);

        _balances[sender] = _balances[sender].sub(amount, "ERC20: transfer amount exceeds balance");
        _balances[recipient] = _balances[recipient].add(amount);
        emit Transfer(sender, recipient, amount);
    }

    /** @dev Creates `amount` tokens and assigns them to `account`, increasing
     * the total supply.
     *
     * Emits a {Transfer} event with `from` set to the zero address.
     *
     * Requirements:
     *
     * - `to` cannot be the zero address.
     */
    function _mint(address account, uint256 amount) internal virtual {
        require(account != address(0), "ERC20: mint to the zero address");

        _beforeTokenTransfer(address(0), account, amount);

        _totalSupply = _totalSupply.add(amount);
        _balances[account] = _balances[account].add(amount);
        emit Transfer(address(0), account, amount);
    }

    /**
     * @dev Destroys `amount` tokens from `account`, reducing the
     * total supply.
     *
     * Emits a {Transfer} event with `to` set to the zero address.
     *
     * Requirements:
     *
     * - `account` cannot be the zero address.
     * - `account` must have at least `amount` tokens.
     */
    function _burn(address account, uint256 amount) internal virtual {
        require(account != address(0), "ERC20: burn from the zero address");

        _beforeTokenTransfer(account, address(0), amount);

        _balances[account] = _balances[account].sub(amount, "ERC20: burn amount exceeds balance");
        _totalSupply = _totalSupply.sub(amount);
        emit Transfer(account, address(0), amount);
    }

    /**
     * @dev Sets `amount` as the allowance of `spender` over the `owner` s tokens.
     *
     * This internal function is equivalent to `approve`, and can be used to
     * e.g. set automatic allowances for certain subsystems, etc.
     *
     * Emits an {Approval} event.
     *
     * Requirements:
     *
     * - `owner` cannot be the zero address.
     * - `spender` cannot be the zero address.
     */
    function _approve(address owner, address spender, uint256 amount) internal virtual {
        require(owner != address(0), "ERC20: approve from the zero address");
        require(spender != address(0), "ERC20: approve to the zero address");

        _allowances[owner][spender] = amount;
        emit Approval(owner, spender, amount);
    }

    /**
     * @dev Sets {decimals} to a value other than the default one of 18.
     *
     * WARNING: This function should only be called from the constructor. Most
     * applications that interact with token contracts will not expect
     * {decimals} to ever change, and may work incorrectly if it does.
     */
    function _setupDecimals(uint8 decimals_) internal virtual {
        _decimals = decimals_;
    }

    /**
     * @dev Hook that is called before any transfer of tokens. This includes
     * minting and burning.
     *
     * Calling conditions:
     *
     * - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens
     * will be to transferred to `to`.
     * - when `from` is zero, `amount` tokens will be minted for `to`.
     * - when `to` is zero, `amount` of ``from``'s tokens will be burned.
     * - `from` and `to` are never both zero.
     *
     * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
     */
    function _beforeTokenTransfer(address from, address to, uint256 amount) internal virtual { }
    uint256[44] private __gap;
}


// Dependency file: @openzeppelin/contracts/access/Ownable.sol


// pragma solidity ^0.7.0;

// import "@openzeppelin/contracts/utils/Context.sol";
/**
 * @dev Contract module which provides a basic access control mechanism, where
 * there is an account (an owner) that can be granted exclusive access to
 * specific functions.
 *
 * By default, the owner account will be the one that deploys the contract. This
 * can later be changed with {transferOwnership}.
 *
 * This module is used through inheritance. It will make available the modifier
 * `onlyOwner`, which can be applied to your functions to restrict their use to
 * the owner.
 */
abstract contract Ownable is Context {
    address private _owner;

    event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);

    /**
     * @dev Initializes the contract setting the deployer as the initial owner.
     */
    constructor () {
        address msgSender = _msgSender();
        _owner = msgSender;
        emit OwnershipTransferred(address(0), msgSender);
    }

    /**
     * @dev Returns the address of the current owner.
     */
    function owner() public view virtual returns (address) {
        return _owner;
    }

    /**
     * @dev Throws if called by any account other than the owner.
     */
    modifier onlyOwner() {
        require(owner() == _msgSender(), "Ownable: caller is not the owner");
        _;
    }

    /**
     * @dev Leaves the contract without owner. It will not be possible to call
     * `onlyOwner` functions anymore. Can only be called by the current owner.
     *
     * NOTE: Renouncing ownership will leave the contract without an owner,
     * thereby removing any functionality that is only available to the owner.
     */
    function renounceOwnership() public virtual onlyOwner {
        emit OwnershipTransferred(_owner, address(0));
        _owner = address(0);
    }

    /**
     * @dev Transfers ownership of the contract to a new account (`newOwner`).
     * Can only be called by the current owner.
     */
    function transferOwnership(address newOwner) public virtual onlyOwner {
        require(newOwner != address(0), "Ownable: new owner is the zero address");
        emit OwnershipTransferred(_owner, newOwner);
        _owner = newOwner;
    }
}


// Dependency file: @openzeppelin/contracts-upgradeable/access/OwnableUpgradeable.sol


// pragma solidity >=0.6.0 <0.8.0;

// import "@openzeppelin/contracts-upgradeable/utils/ContextUpgradeable.sol";
// import "@openzeppelin/contracts-upgradeable/proxy/Initializable.sol";
/**
 * @dev Contract module which provides a basic access control mechanism, where
 * there is an account (an owner) that can be granted exclusive access to
 * specific functions.
 *
 * By default, the owner account will be the one that deploys the contract. This
 * can later be changed with {transferOwnership}.
 *
 * This module is used through inheritance. It will make available the modifier
 * `onlyOwner`, which can be applied to your functions to restrict their use to
 * the owner.
 */
abstract contract OwnableUpgradeable is Initializable, ContextUpgradeable {
    address private _owner;

    event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);

    /**
     * @dev Initializes the contract setting the deployer as the initial owner.
     */
    function __Ownable_init() internal initializer {
        __Context_init_unchained();
        __Ownable_init_unchained();
    }

    function __Ownable_init_unchained() internal initializer {
        address msgSender = _msgSender();
        _owner = msgSender;
        emit OwnershipTransferred(address(0), msgSender);
    }

    /**
     * @dev Returns the address of the current owner.
     */
    function owner() public view virtual returns (address) {
        return _owner;
    }

    /**
     * @dev Throws if called by any account other than the owner.
     */
    modifier onlyOwner() {
        require(owner() == _msgSender(), "Ownable: caller is not the owner");
        _;
    }

    /**
     * @dev Leaves the contract without owner. It will not be possible to call
     * `onlyOwner` functions anymore. Can only be called by the current owner.
     *
     * NOTE: Renouncing ownership will leave the contract without an owner,
     * thereby removing any functionality that is only available to the owner.
     */
    function renounceOwnership() public virtual onlyOwner {
        emit OwnershipTransferred(_owner, address(0));
        _owner = address(0);
    }

    /**
     * @dev Transfers ownership of the contract to a new account (`newOwner`).
     * Can only be called by the current owner.
     */
    function transferOwnership(address newOwner) public virtual onlyOwner {
        require(newOwner != address(0), "Ownable: new owner is the zero address");
        emit OwnershipTransferred(_owner, newOwner);
        _owner = newOwner;
    }
    uint256[49] private __gap;
}


// Dependency file: @openzeppelin/contracts/proxy/Clones.sol


// pragma solidity >=0.6.0 <0.8.0;

/**
 * @dev https://eips.ethereum.org/EIPS/eip-1167[EIP 1167] is a standard for
 * deploying minimal proxy contracts, also known as "clones".
 *
 * > To simply and cheaply clone contract functionality in an immutable way, this standard specifies
 * > a minimal bytecode implementation that delegates all calls to a known, fixed address.
 *
 * The library includes functions to deploy a proxy using either `create` (traditional deployment) or `create2`
 * (salted deterministic deployment). It also includes functions to predict the addresses of clones deployed using the
 * deterministic method.
 *
 * _Available since v3.4._
 */
library Clones {
    /**
     * @dev Deploys and returns the address of a clone that mimics the behaviour of `master`.
     *
     * This function uses the create opcode, which should never revert.
     */
    function clone(address master) internal returns (address instance) {
        // solhint-disable-next-line no-inline-assembly
        assembly {
            let ptr := mload(0x40)
            mstore(ptr, 0x3d602d80600a3d3981f3363d3d373d3d3d363d73000000000000000000000000)
            mstore(add(ptr, 0x14), shl(0x60, master))
            mstore(add(ptr, 0x28), 0x5af43d82803e903d91602b57fd5bf30000000000000000000000000000000000)
            instance := create(0, ptr, 0x37)
        }
        require(instance != address(0), "ERC1167: create failed");
    }

    /**
     * @dev Deploys and returns the address of a clone that mimics the behaviour of `master`.
     *
     * This function uses the create2 opcode and a `salt` to deterministically deploy
     * the clone. Using the same `master` and `salt` multiple time will revert, since
     * the clones cannot be deployed twice at the same address.
     */
    function cloneDeterministic(address master, bytes32 salt) internal returns (address instance) {
        // solhint-disable-next-line no-inline-assembly
        assembly {
            let ptr := mload(0x40)
            mstore(ptr, 0x3d602d80600a3d3981f3363d3d373d3d3d363d73000000000000000000000000)
            mstore(add(ptr, 0x14), shl(0x60, master))
            mstore(add(ptr, 0x28), 0x5af43d82803e903d91602b57fd5bf30000000000000000000000000000000000)
            instance := create2(0, ptr, 0x37, salt)
        }
        require(instance != address(0), "ERC1167: create2 failed");
    }

    /**
     * @dev Computes the address of a clone deployed using {Clones-cloneDeterministic}.
     */
    function predictDeterministicAddress(address master, bytes32 salt, address deployer) internal pure returns (address predicted) {
        // solhint-disable-next-line no-inline-assembly
        assembly {
            let ptr := mload(0x40)
            mstore(ptr, 0x3d602d80600a3d3981f3363d3d373d3d3d363d73000000000000000000000000)
            mstore(add(ptr, 0x14), shl(0x60, master))
            mstore(add(ptr, 0x28), 0x5af43d82803e903d91602b57fd5bf3ff00000000000000000000000000000000)
            mstore(add(ptr, 0x38), shl(0x60, deployer))
            mstore(add(ptr, 0x4c), salt)
            mstore(add(ptr, 0x6c), keccak256(ptr, 0x37))
            predicted := keccak256(add(ptr, 0x37), 0x55)
        }
    }

    /**
     * @dev Computes the address of a clone deployed using {Clones-cloneDeterministic}.
     */
    function predictDeterministicAddress(address master, bytes32 salt) internal view returns (address predicted) {
        return predictDeterministicAddress(master, salt, address(this));
    }
}


// Dependency file: contracts/interfaces/IUniswapV2Factory.sol

// pragma solidity >=0.5.0;

interface IUniswapV2Factory {
    event PairCreated(
        address indexed token0,
        address indexed token1,
        address pair,
        uint256
    );

    function feeTo() external view returns (address);

    function feeToSetter() external view returns (address);

    function getPair(address tokenA, address tokenB)
        external
        view
        returns (address pair);

    function allPairs(uint256) external view returns (address pair);

    function allPairsLength() external view returns (uint256);

    function createPair(address tokenA, address tokenB)
        external
        returns (address pair);

    function setFeeTo(address) external;

    function setFeeToSetter(address) external;
}


// Dependency file: contracts/interfaces/IUniswapV2Router02.sol

// pragma solidity >=0.6.2;

interface IUniswapV2Router01 {
    function factory() external pure returns (address);

    function WETH() external pure returns (address);

    function addLiquidity(
        address tokenA,
        address tokenB,
        uint256 amountADesired,
        uint256 amountBDesired,
        uint256 amountAMin,
        uint256 amountBMin,
        address to,
        uint256 deadline
    )
        external
        returns (
            uint256 amountA,
            uint256 amountB,
            uint256 liquidity
        );

    function addLiquidityETH(
        address token,
        uint256 amountTokenDesired,
        uint256 amountTokenMin,
        uint256 amountETHMin,
        address to,
        uint256 deadline
    )
        external
        payable
        returns (
            uint256 amountToken,
            uint256 amountETH,
            uint256 liquidity
        );

    function removeLiquidity(
        address tokenA,
        address tokenB,
        uint256 liquidity,
        uint256 amountAMin,
        uint256 amountBMin,
        address to,
        uint256 deadline
    ) external returns (uint256 amountA, uint256 amountB);

    function removeLiquidityETH(
        address token,
        uint256 liquidity,
        uint256 amountTokenMin,
        uint256 amountETHMin,
        address to,
        uint256 deadline
    ) external returns (uint256 amountToken, uint256 amountETH);

    function removeLiquidityWithPermit(
        address tokenA,
        address tokenB,
        uint256 liquidity,
        uint256 amountAMin,
        uint256 amountBMin,
        address to,
        uint256 deadline,
        bool approveMax,
        uint8 v,
        bytes32 r,
        bytes32 s
    ) external returns (uint256 amountA, uint256 amountB);

    function removeLiquidityETHWithPermit(
        address token,
        uint256 liquidity,
        uint256 amountTokenMin,
        uint256 amountETHMin,
        address to,
        uint256 deadline,
        bool approveMax,
        uint8 v,
        bytes32 r,
        bytes32 s
    ) external returns (uint256 amountToken, uint256 amountETH);

    function swapExactTokensForTokens(
        uint256 amountIn,
        uint256 amountOutMin,
        address[] calldata path,
        address to,
        uint256 deadline
    ) external returns (uint256[] memory amounts);

    function swapTokensForExactTokens(
        uint256 amountOut,
        uint256 amountInMax,
        address[] calldata path,
        address to,
        uint256 deadline
    ) external returns (uint256[] memory amounts);

    function swapExactETHForTokens(
        uint256 amountOutMin,
        address[] calldata path,
        address to,
        uint256 deadline
    ) external payable returns (uint256[] memory amounts);

    function swapTokensForExactETH(
        uint256 amountOut,
        uint256 amountInMax,
        address[] calldata path,
        address to,
        uint256 deadline
    ) external returns (uint256[] memory amounts);

    function swapExactTokensForETH(
        uint256 amountIn,
        uint256 amountOutMin,
        address[] calldata path,
        address to,
        uint256 deadline
    ) external returns (uint256[] memory amounts);

    function swapETHForExactTokens(
        uint256 amountOut,
        address[] calldata path,
        address to,
        uint256 deadline
    ) external payable returns (uint256[] memory amounts);

    function quote(
        uint256 amountA,
        uint256 reserveA,
        uint256 reserveB
    ) external pure returns (uint256 amountB);

    function getAmountOut(
        uint256 amountIn,
        uint256 reserveIn,
        uint256 reserveOut
    ) external pure returns (uint256 amountOut);

    function getAmountIn(
        uint256 amountOut,
        uint256 reserveIn,
        uint256 reserveOut
    ) external pure returns (uint256 amountIn);

    function getAmountsOut(uint256 amountIn, address[] calldata path)
        external
        view
        returns (uint256[] memory amounts);

    function getAmountsIn(uint256 amountOut, address[] calldata path)
        external
        view
        returns (uint256[] memory amounts);
}

interface IUniswapV2Router02 is IUniswapV2Router01 {
    function removeLiquidityETHSupportingFeeOnTransferTokens(
        address token,
        uint256 liquidity,
        uint256 amountTokenMin,
        uint256 amountETHMin,
        address to,
        uint256 deadline
    ) external returns (uint256 amountETH);

    function removeLiquidityETHWithPermitSupportingFeeOnTransferTokens(
        address token,
        uint256 liquidity,
        uint256 amountTokenMin,
        uint256 amountETHMin,
        address to,
        uint256 deadline,
        bool approveMax,
        uint8 v,
        bytes32 r,
        bytes32 s
    ) external returns (uint256 amountETH);

    function swapExactTokensForTokensSupportingFeeOnTransferTokens(
        uint256 amountIn,
        uint256 amountOutMin,
        address[] calldata path,
        address to,
        uint256 deadline
    ) external;

    function swapExactETHForTokensSupportingFeeOnTransferTokens(
        uint256 amountOutMin,
        address[] calldata path,
        address to,
        uint256 deadline
    ) external payable;

    function swapExactTokensForETHSupportingFeeOnTransferTokens(
        uint256 amountIn,
        uint256 amountOutMin,
        address[] calldata path,
        address to,
        uint256 deadline
    ) external;
}


// Dependency file: contracts/interfaces/IUniswapV2Pair.sol

// pragma solidity >=0.5.0;

interface IUniswapV2Pair {
    event Approval(address indexed owner, address indexed spender, uint value);
    event Transfer(address indexed from, address indexed to, uint value);

    function name() external pure returns (string memory);
    function symbol() external pure returns (string memory);
    function decimals() external pure returns (uint8);
    function totalSupply() external view returns (uint);
    function balanceOf(address owner) external view returns (uint);
    function allowance(address owner, address spender) external view returns (uint);

    function approve(address spender, uint value) external returns (bool);
    function transfer(address to, uint value) external returns (bool);
    function transferFrom(address from, address to, uint value) external returns (bool);

    function DOMAIN_SEPARATOR() external view returns (bytes32);
    function PERMIT_TYPEHASH() external pure returns (bytes32);
    function nonces(address owner) external view returns (uint);

    function permit(address owner, address spender, uint value, uint deadline, uint8 v, bytes32 r, bytes32 s) external;

    event Mint(address indexed sender, uint amount0, uint amount1);
    event Burn(address indexed sender, uint amount0, uint amount1, address indexed to);
    event Swap(
        address indexed sender,
        uint amount0In,
        uint amount1In,
        uint amount0Out,
        uint amount1Out,
        address indexed to
    );
    event Sync(uint112 reserve0, uint112 reserve1);

    function MINIMUM_LIQUIDITY() external pure returns (uint);
    function factory() external view returns (address);
    function token0() external view returns (address);
    function token1() external view returns (address);
    function getReserves() external view returns (uint112 reserve0, uint112 reserve1, uint32 blockTimestampLast);
    function price0CumulativeLast() external view returns (uint);
    function price1CumulativeLast() external view returns (uint);
    function kLast() external view returns (uint);

    function mint(address to) external returns (uint liquidity);
    function burn(address to) external returns (uint amount0, uint amount1);
    function swap(uint amount0Out, uint amount1Out, address to, bytes calldata data) external;
    function skim(address to) external;
    function sync() external;

    function initialize(address, address) external;
}

// Dependency file: contracts/libs/SafeMathInt.sol

// pragma solidity ^0.7.6;

/**
 * @title SafeMathInt
 * @dev Math operations for int256 with overflow safety checks.
 */
library SafeMathInt {
    int256 private constant MIN_INT256 = int256(1) << 255;
    int256 private constant MAX_INT256 = ~(int256(1) << 255);

    /**
     * @dev Multiplies two int256 variables and fails on overflow.
     */
    function mul(int256 a, int256 b) internal pure returns (int256) {
        int256 c = a * b;

        // Detect overflow when multiplying MIN_INT256 with -1
        require(c != MIN_INT256 || (a & MIN_INT256) != (b & MIN_INT256));
        require((b == 0) || (c / b == a));
        return c;
    }

    /**
     * @dev Division of two int256 variables and fails on overflow.
     */
    function div(int256 a, int256 b) internal pure returns (int256) {
        // Prevent overflow when dividing MIN_INT256 by -1
        require(b != -1 || a != MIN_INT256);

        // Solidity already throws when dividing by 0.
        return a / b;
    }

    /**
     * @dev Subtracts two int256 variables and fails on overflow.
     */
    function sub(int256 a, int256 b) internal pure returns (int256) {
        int256 c = a - b;
        require((b >= 0 && c <= a) || (b < 0 && c > a));
        return c;
    }

    /**
     * @dev Adds two int256 variables and fails on overflow.
     */
    function add(int256 a, int256 b) internal pure returns (int256) {
        int256 c = a + b;
        require((b >= 0 && c >= a) || (b < 0 && c < a));
        return c;
    }

    /**
     * @dev Converts to absolute value, and fails on overflow.
     */
    function abs(int256 a) internal pure returns (int256) {
        require(a != MIN_INT256);
        return a < 0 ? -a : a;
    }


    function toUint256Safe(int256 a) internal pure returns (uint256) {
        require(a >= 0);
        return uint256(a);
    }
}

// Dependency file: contracts/libs/SafeMathUint.sol

// pragma solidity ^0.7.6;

/**
 * @title SafeMathUint
 * @dev Math operations with safety checks that revert on error
 */
library SafeMathUint {
  function toInt256Safe(uint256 a) internal pure returns (int256) {
    int256 b = int256(a);
    require(b >= 0);
    return b;
  }
}

// Dependency file: contracts/libs/IterableMapping.sol


// pragma solidity ^0.7.6;

library IterableMapping {
    // Iterable mapping from address to uint;
    struct Map {
        address[] keys;
        mapping(address => uint) values;
        mapping(address => uint) indexOf;
        mapping(address => bool) inserted;
    }

    function get(Map storage map, address key) public view returns (uint) {
        return map.values[key];
    }

    function getIndexOfKey(Map storage map, address key) public view returns (int) {
        if(!map.inserted[key]) {
            return -1;
        }
        return int(map.indexOf[key]);
    }

    function getKeyAtIndex(Map storage map, uint index) public view returns (address) {
        return map.keys[index];
    }



    function size(Map storage map) public view returns (uint) {
        return map.keys.length;
    }

    function set(Map storage map, address key, uint val) public {
        if (map.inserted[key]) {
            map.values[key] = val;
        } else {
            map.inserted[key] = true;
            map.values[key] = val;
            map.indexOf[key] = map.keys.length;
            map.keys.push(key);
        }
    }

    function remove(Map storage map, address key) public {
        if (!map.inserted[key]) {
            return;
        }

        delete map.inserted[key];
        delete map.values[key];

        uint index = map.indexOf[key];
        uint lastIndex = map.keys.length - 1;
        address lastKey = map.keys[lastIndex];

        map.indexOf[lastKey] = index;
        delete map.indexOf[key];

        map.keys[index] = lastKey;
        map.keys.pop();
    }
}

// Dependency file: contracts/antibot/IPinkAntiBot.sol

// pragma solidity >=0.5.0;

interface IPinkAntiBot {
  function setTokenOwner(address owner) external;

  function onPreTransferCheck(
    address from,
    address to,
    uint256 amount
  ) external;
}


// Dependency file: contracts/interfaces/IAntiBotBabyToken.sol

// pragma solidity >=0.5.0;

interface IAntiBotBabyToken {
  function initialize(
    address[5] memory addrs, // [0] = owner, [1] = rewardToken, [2] = router, [3] = marketing wallet, [4] = anti bot
    string memory name_,
    string memory symbol_,
    uint256 totalSupply_,
    uint256 tokenRewardsFee_,
    uint256 liquidityFee_,
    uint256 marketingFee_,
    uint256 minimumTokenBalanceForDividends_
  ) external;
}


// Root file: contracts/tokens/AntiBotBabyToken.sol


pragma solidity ^0.7.6;

// import "@openzeppelin/contracts/token/ERC20/ERC20.sol";
// import "@openzeppelin/contracts-upgradeable/token/ERC20/ERC20Upgradeable.sol";
// import "@openzeppelin/contracts/token/ERC20/IERC20.sol";
// import "@openzeppelin/contracts/access/Ownable.sol";
// import "@openzeppelin/contracts-upgradeable/access/OwnableUpgradeable.sol";
// import "@openzeppelin/contracts/math/SafeMath.sol";
// import "@openzeppelin/contracts/proxy/Clones.sol";
// import "contracts/interfaces/IUniswapV2Factory.sol";
// import "contracts/interfaces/IUniswapV2Router02.sol";
// import "contracts/interfaces/IUniswapV2Pair.sol";
// import "contracts/libs/SafeMathInt.sol";
// import "contracts/libs/SafeMathUint.sol";
// import "contracts/libs/IterableMapping.sol";
// import "contracts/antibot/IPinkAntiBot.sol";
// import "contracts/interfaces/IAntiBotBabyToken.sol";

/// @title Dividend-Paying Token Interface
/// @author Roger Wu (https://github.com/roger-wu)
/// @dev An interface for a dividend-paying token contract.
interface DividendPayingTokenInterface {
  /// @notice View the amount of dividend in wei that an address can withdraw.
  /// @param _owner The address of a token holder.
  /// @return The amount of dividend in wei that `_owner` can withdraw.
  function dividendOf(address _owner) external view returns (uint256);

  /// @notice Withdraws the ether distributed to the sender.
  /// @dev SHOULD transfer `dividendOf(msg.sender)` wei to `msg.sender`, and `dividendOf(msg.sender)` SHOULD be 0 after the transfer.
  ///  MUST emit a `DividendWithdrawn` event if the amount of ether transferred is greater than 0.
  function withdrawDividend() external;

  /// @dev This event MUST emit when ether is distributed to token holders.
  /// @param from The address which sends ether to this contract.
  /// @param weiAmount The amount of distributed ether in wei.
  event DividendsDistributed(address indexed from, uint256 weiAmount);

  /// @dev This event MUST emit when an address withdraws their dividend.
  /// @param to The address which withdraws ether from this contract.
  /// @param weiAmount The amount of withdrawn ether in wei.
  event DividendWithdrawn(address indexed to, uint256 weiAmount);
}

/// @title Dividend-Paying Token Optional Interface
/// @author Roger Wu (https://github.com/roger-wu)
/// @dev OPTIONAL functions for a dividend-paying token contract.
interface DividendPayingTokenOptionalInterface {
  /// @notice View the amount of dividend in wei that an address can withdraw.
  /// @param _owner The address of a token holder.
  /// @return The amount of dividend in wei that `_owner` can withdraw.
  function withdrawableDividendOf(address _owner) external view returns (uint256);

  /// @notice View the amount of dividend in wei that an address has withdrawn.
  /// @param _owner The address of a token holder.
  /// @return The amount of dividend in wei that `_owner` has withdrawn.
  function withdrawnDividendOf(address _owner) external view returns (uint256);

  /// @notice View the amount of dividend in wei that an address has earned in total.
  /// @dev accumulativeDividendOf(_owner) = withdrawableDividendOf(_owner) + withdrawnDividendOf(_owner)
  /// @param _owner The address of a token holder.
  /// @return The amount of dividend in wei that `_owner` has earned in total.
  function accumulativeDividendOf(address _owner) external view returns (uint256);
}

/// @title Dividend-Paying Token
/// @author Roger Wu (https://github.com/roger-wu)
/// @dev A mintable ERC20 token that allows anyone to pay and distribute ether
///  to token holders as dividends and allows token holders to withdraw their dividends.
///  Reference: the source code of PoWH3D: https://etherscan.io/address/0xB3775fB83F7D12A36E0475aBdD1FCA35c091efBe#code
contract DividendPayingToken is
  ERC20Upgradeable,
  OwnableUpgradeable,
  DividendPayingTokenInterface,
  DividendPayingTokenOptionalInterface
{
  using SafeMath for uint256;
  using SafeMathUint for uint256;
  using SafeMathInt for int256;

  address public rewardToken;

  // With `magnitude`, we can properly distribute dividends even if the amount of received ether is small.
  // For more discussion about choosing the value of `magnitude`,
  //  see https://github.com/ethereum/EIPs/issues/1726#issuecomment-472352728
  uint256 internal constant magnitude = 2**128;

  uint256 internal magnifiedDividendPerShare;

  // About dividendCorrection:
  // If the token balance of a `_user` is never changed, the dividend of `_user` can be computed with:
  //   `dividendOf(_user) = dividendPerShare * balanceOf(_user)`.
  // When `balanceOf(_user)` is changed (via minting/burning/transferring tokens),
  //   `dividendOf(_user)` should not be changed,
  //   but the computed value of `dividendPerShare * balanceOf(_user)` is changed.
  // To keep the `dividendOf(_user)` unchanged, we add a correction term:
  //   `dividendOf(_user) = dividendPerShare * balanceOf(_user) + dividendCorrectionOf(_user)`,
  //   where `dividendCorrectionOf(_user)` is updated whenever `balanceOf(_user)` is changed:
  //   `dividendCorrectionOf(_user) = dividendPerShare * (old balanceOf(_user)) - (new balanceOf(_user))`.
  // So now `dividendOf(_user)` returns the same value before and after `balanceOf(_user)` is changed.
  mapping(address => int256) internal magnifiedDividendCorrections;
  mapping(address => uint256) internal withdrawnDividends;

  uint256 public totalDividendsDistributed;

  function __DividendPayingToken_init(
    address _rewardToken,
    string memory _name,
    string memory _symbol
  ) internal initializer {
    __Ownable_init();
    __ERC20_init(_name, _symbol);
    rewardToken = _rewardToken;
  }

  function distributeCAKEDividends(uint256 amount) public onlyOwner {
    require(totalSupply() > 0);

    if (amount > 0) {
      magnifiedDividendPerShare = magnifiedDividendPerShare.add(
        (amount).mul(magnitude) / totalSupply()
      );
      emit DividendsDistributed(msg.sender, amount);

      totalDividendsDistributed = totalDividendsDistributed.add(amount);
    }
  }

  /// @notice Withdraws the ether distributed to the sender.
  /// @dev It emits a `DividendWithdrawn` event if the amount of withdrawn ether is greater than 0.
  function withdrawDividend() public virtual override {
    _withdrawDividendOfUser(msg.sender);
  }

  /// @notice Withdraws the ether distributed to the sender.
  /// @dev It emits a `DividendWithdrawn` event if the amount of withdrawn ether is greater than 0.
  function _withdrawDividendOfUser(address payable user) internal returns (uint256) {
    uint256 _withdrawableDividend = withdrawableDividendOf(user);
    if (_withdrawableDividend > 0) {
      withdrawnDividends[user] = withdrawnDividends[user].add(_withdrawableDividend);
      emit DividendWithdrawn(user, _withdrawableDividend);
      bool success = IERC20(rewardToken).transfer(user, _withdrawableDividend);

      if (!success) {
        withdrawnDividends[user] = withdrawnDividends[user].sub(_withdrawableDividend);
        return 0;
      }

      return _withdrawableDividend;
    }

    return 0;
  }

  /// @notice View the amount of dividend in wei that an address can withdraw.
  /// @param _owner The address of a token holder.
  /// @return The amount of dividend in wei that `_owner` can withdraw.
  function dividendOf(address _owner) public view override returns (uint256) {
    return withdrawableDividendOf(_owner);
  }

  /// @notice View the amount of dividend in wei that an address can withdraw.
  /// @param _owner The address of a token holder.
  /// @return The amount of dividend in wei that `_owner` can withdraw.
  function withdrawableDividendOf(address _owner) public view override returns (uint256) {
    return accumulativeDividendOf(_owner).sub(withdrawnDividends[_owner]);
  }

  /// @notice View the amount of dividend in wei that an address has withdrawn.
  /// @param _owner The address of a token holder.
  /// @return The amount of dividend in wei that `_owner` has withdrawn.
  function withdrawnDividendOf(address _owner) public view override returns (uint256) {
    return withdrawnDividends[_owner];
  }

  /// @notice View the amount of dividend in wei that an address has earned in total.
  /// @dev accumulativeDividendOf(_owner) = withdrawableDividendOf(_owner) + withdrawnDividendOf(_owner)
  /// = (magnifiedDividendPerShare * balanceOf(_owner) + magnifiedDividendCorrections[_owner]) / magnitude
  /// @param _owner The address of a token holder.
  /// @return The amount of dividend in wei that `_owner` has earned in total.
  function accumulativeDividendOf(address _owner) public view override returns (uint256) {
    return
      magnifiedDividendPerShare
        .mul(balanceOf(_owner))
        .toInt256Safe()
        .add(magnifiedDividendCorrections[_owner])
        .toUint256Safe() / magnitude;
  }

  /// @dev Internal function that transfer tokens from one address to another.
  /// Update magnifiedDividendCorrections to keep dividends unchanged.
  /// @param from The address to transfer from.
  /// @param to The address to transfer to.
  /// @param value The amount to be transferred.
  function _transfer(
    address from,
    address to,
    uint256 value
  ) internal virtual override {
    require(false);

    int256 _magCorrection = magnifiedDividendPerShare.mul(value).toInt256Safe();
    magnifiedDividendCorrections[from] = magnifiedDividendCorrections[from].add(_magCorrection);
    magnifiedDividendCorrections[to] = magnifiedDividendCorrections[to].sub(_magCorrection);
  }

  /// @dev Internal function that mints tokens to an account.
  /// Update magnifiedDividendCorrections to keep dividends unchanged.
  /// @param account The account that will receive the created tokens.
  /// @param value The amount that will be created.
  function _mint(address account, uint256 value) internal override {
    super._mint(account, value);

    magnifiedDividendCorrections[account] = magnifiedDividendCorrections[account].sub(
      (magnifiedDividendPerShare.mul(value)).toInt256Safe()
    );
  }

  /// @dev Internal function that burns an amount of the token of a given account.
  /// Update magnifiedDividendCorrections to keep dividends unchanged.
  /// @param account The account whose tokens will be burnt.
  /// @param value The amount that will be burnt.
  function _burn(address account, uint256 value) internal override {
    super._burn(account, value);

    magnifiedDividendCorrections[account] = magnifiedDividendCorrections[account].add(
      (magnifiedDividendPerShare.mul(value)).toInt256Safe()
    );
  }

  function _setBalance(address account, uint256 newBalance) internal {
    uint256 currentBalance = balanceOf(account);

    if (newBalance > currentBalance) {
      uint256 mintAmount = newBalance.sub(currentBalance);
      _mint(account, mintAmount);
    } else if (newBalance < currentBalance) {
      uint256 burnAmount = currentBalance.sub(newBalance);
      _burn(account, burnAmount);
    }
  }
}

contract AntiBotBABYTOKEN is ERC20Upgradeable, OwnableUpgradeable, IAntiBotBabyToken {
  using SafeMath for uint256;

  IUniswapV2Router02 public uniswapV2Router;
  address public uniswapV2Pair;

  bool private swapping;

  address public immutable implementation;
  BABYTOKENDividendTracker public dividendTracker;

  address public rewardToken;

  uint256 public swapTokensAtAmount;

  mapping(address => bool) public _isBlacklisted;

  uint256 public tokenRewardsFee;
  uint256 public liquidityFee;
  uint256 public marketingFee;
  uint256 public totalFees;

  address public _marketingWalletAddress;

  // use by default 300,000 gas to process auto-claiming dividends
  uint256 public gasForProcessing = 300000;

  // exlcude from fees and max transaction amount
  mapping(address => bool) private _isExcludedFromFees;

  // store addresses that a automatic market maker pairs. Any transfer *to* these addresses
  // could be subject to a maximum transfer amount
  mapping(address => bool) public automatedMarketMakerPairs;

  IPinkAntiBot public pinkAntiBot;
  bool public enableAntiBot;

  event UpdateDividendTracker(address indexed newAddress, address indexed oldAddress);

  event UpdateUniswapV2Router(address indexed newAddress, address indexed oldAddress);

  event ExcludeFromFees(address indexed account, bool isExcluded);
  event ExcludeMultipleAccountsFromFees(address[] accounts, bool isExcluded);

  event SetAutomatedMarketMakerPair(address indexed pair, bool indexed value);

  event LiquidityWalletUpdated(
    address indexed newLiquidityWallet,
    address indexed oldLiquidityWallet
  );

  event GasForProcessingUpdated(uint256 indexed newValue, uint256 indexed oldValue);

  event SwapAndLiquify(uint256 tokensSwapped, uint256 ethReceived, uint256 tokensIntoLiqudity);

  event SendDividends(uint256 tokensSwapped, uint256 amount);

  event ProcessedDividendTracker(
    uint256 iterations,
    uint256 claims,
    uint256 lastProcessedIndex,
    bool indexed automatic,
    uint256 gas,
    address indexed processor
  );

  constructor() {
    implementation = address(new BABYTOKENDividendTracker());
  }

  function initialize(
    address[5] memory addrs, // [0] = owner, [1] = rewardToken, [2] = router, [3] = marketing wallet
    string memory name_,
    string memory symbol_,
    uint256 totalSupply_,
    uint256 tokenRewardsFee_,
    uint256 liquidityFee_,
    uint256 marketingFee_,
    uint256 minimumTokenBalanceForDividends_
  ) external override initializer {
    require(addrs[0] != addrs[3], "Owner and marketing wallet cannot be the same");
    __ERC20_init(name_, symbol_);
    __Ownable_init();
    pinkAntiBot = IPinkAntiBot(addrs[4]);
    pinkAntiBot.setTokenOwner(addrs[0]);
    enableAntiBot = true;
    rewardToken = addrs[1];
    tokenRewardsFee = tokenRewardsFee_;
    liquidityFee = liquidityFee_;
    marketingFee = marketingFee_;
    totalFees = tokenRewardsFee.add(liquidityFee).add(marketingFee);
    require(totalFees <= 100, "Total fee is over 100%");
    swapTokensAtAmount = totalSupply_.mul(2).div(10**6); // 0.002%

    dividendTracker = BABYTOKENDividendTracker(payable(Clones.clone(implementation)));
    dividendTracker.initialize(rewardToken, minimumTokenBalanceForDividends_);

    IUniswapV2Router02 _uniswapV2Router = IUniswapV2Router02(addrs[2]);
    // Create a uniswap pair for this new token
    address _uniswapV2Pair = IUniswapV2Factory(_uniswapV2Router.factory()).createPair(
      address(this),
      _uniswapV2Router.WETH()
    );
    uniswapV2Router = _uniswapV2Router;
    uniswapV2Pair = _uniswapV2Pair;
    _setAutomatedMarketMakerPair(_uniswapV2Pair, true);

    _marketingWalletAddress = addrs[3];
    // exclude from receiving dividends
    dividendTracker.excludeFromDividends(address(dividendTracker));
    dividendTracker.excludeFromDividends(address(this));
    dividendTracker.excludeFromDividends(addrs[0]);
    dividendTracker.excludeFromDividends(address(0xdead));
    dividendTracker.excludeFromDividends(address(_uniswapV2Router));
    // exclude from paying fees or having max transaction amount
    excludeFromFees(addrs[0], true);
    excludeFromFees(_marketingWalletAddress, true);
    excludeFromFees(address(this), true);
    /*
            _mint is an internal function in ERC20.sol that is only called here,
            and CANNOT be called ever again
        */
    _mint(addrs[0], totalSupply_);
    transferOwnership(addrs[0]);
  }

  function setEnableAntiBot(bool _enable) external onlyOwner {
    enableAntiBot = _enable;
  }

  receive() external payable {}

  function setSwapTokensAtAmount(uint256 amount) external onlyOwner {
    swapTokensAtAmount = amount;
  }

  function updateDividendTracker(address newAddress) public onlyOwner {
    require(
      newAddress != address(dividendTracker),
      "BABYTOKEN: The dividend tracker already has that address"
    );

    BABYTOKENDividendTracker newDividendTracker = BABYTOKENDividendTracker(payable(newAddress));

    require(
      newDividendTracker.owner() == address(this),
      "BABYTOKEN: The new dividend tracker must be owned by the BABYTOKEN token contract"
    );

    newDividendTracker.excludeFromDividends(address(newDividendTracker));
    newDividendTracker.excludeFromDividends(address(this));
    newDividendTracker.excludeFromDividends(owner());
    newDividendTracker.excludeFromDividends(address(uniswapV2Router));

    emit UpdateDividendTracker(newAddress, address(dividendTracker));

    dividendTracker = newDividendTracker;
  }

  function updateUniswapV2Router(address newAddress) public onlyOwner {
    require(
      newAddress != address(uniswapV2Router),
      "BABYTOKEN: The router already has that address"
    );
    emit UpdateUniswapV2Router(newAddress, address(uniswapV2Router));
    uniswapV2Router = IUniswapV2Router02(newAddress);
    address _uniswapV2Pair = IUniswapV2Factory(uniswapV2Router.factory()).createPair(
      address(this),
      uniswapV2Router.WETH()
    );
    uniswapV2Pair = _uniswapV2Pair;
  }

  function excludeFromFees(address account, bool excluded) public onlyOwner {
    require(
      _isExcludedFromFees[account] != excluded,
      "BABYTOKEN: Account is already the value of 'excluded'"
    );
    _isExcludedFromFees[account] = excluded;

    emit ExcludeFromFees(account, excluded);
  }

  function excludeMultipleAccountsFromFees(address[] calldata accounts, bool excluded)
    public
    onlyOwner
  {
    for (uint256 i = 0; i < accounts.length; i++) {
      _isExcludedFromFees[accounts[i]] = excluded;
    }

    emit ExcludeMultipleAccountsFromFees(accounts, excluded);
  }

  function setMarketingWallet(address payable wallet) external onlyOwner {
    _marketingWalletAddress = wallet;
  }

  function setTokenRewardsFee(uint256 value) external onlyOwner {
    tokenRewardsFee = value;
    totalFees = tokenRewardsFee.add(liquidityFee).add(marketingFee);
  }

  function setLiquiditFee(uint256 value) external onlyOwner {
    liquidityFee = value;
    totalFees = tokenRewardsFee.add(liquidityFee).add(marketingFee);
  }

  function setMarketingFee(uint256 value) external onlyOwner {
    marketingFee = value;
    totalFees = tokenRewardsFee.add(liquidityFee).add(marketingFee);
  }

  function setAutomatedMarketMakerPair(address pair, bool value) public onlyOwner {
    require(
      pair != uniswapV2Pair,
      "BABYTOKEN: The PancakeSwap pair cannot be removed from automatedMarketMakerPairs"
    );

    _setAutomatedMarketMakerPair(pair, value);
  }

  function blacklistAddress(address account, bool value) external onlyOwner {
    _isBlacklisted[account] = value;
  }

  function _setAutomatedMarketMakerPair(address pair, bool value) private {
    require(
      automatedMarketMakerPairs[pair] != value,
      "BABYTOKEN: Automated market maker pair is already set to that value"
    );
    automatedMarketMakerPairs[pair] = value;

    if (value) {
      dividendTracker.excludeFromDividends(pair);
    }

    emit SetAutomatedMarketMakerPair(pair, value);
  }

  function updateGasForProcessing(uint256 newValue) public onlyOwner {
    require(
      newValue >= 200000 && newValue <= 500000,
      "BABYTOKEN: gasForProcessing must be between 200,000 and 500,000"
    );
    require(
      newValue != gasForProcessing,
      "BABYTOKEN: Cannot update gasForProcessing to same value"
    );
    emit GasForProcessingUpdated(newValue, gasForProcessing);
    gasForProcessing = newValue;
  }

  function updateClaimWait(uint256 claimWait) external onlyOwner {
    dividendTracker.updateClaimWait(claimWait);
  }

  function getClaimWait() external view returns (uint256) {
    return dividendTracker.claimWait();
  }

  function getTotalDividendsDistributed() external view returns (uint256) {
    return dividendTracker.totalDividendsDistributed();
  }

  function isExcludedFromFees(address account) public view returns (bool) {
    return _isExcludedFromFees[account];
  }

  function withdrawableDividendOf(address account) public view returns (uint256) {
    return dividendTracker.withdrawableDividendOf(account);
  }

  function dividendTokenBalanceOf(address account) public view returns (uint256) {
    return dividendTracker.balanceOf(account);
  }

  function excludeFromDividends(address account) external onlyOwner {
    dividendTracker.excludeFromDividends(account);
  }

  function getAccountDividendsInfo(address account)
    external
    view
    returns (
      address,
      int256,
      int256,
      uint256,
      uint256,
      uint256,
      uint256,
      uint256
    )
  {
    return dividendTracker.getAccount(account);
  }

  function getAccountDividendsInfoAtIndex(uint256 index)
    external
    view
    returns (
      address,
      int256,
      int256,
      uint256,
      uint256,
      uint256,
      uint256,
      uint256
    )
  {
    return dividendTracker.getAccountAtIndex(index);
  }

  function processDividendTracker(uint256 gas) external {
    (uint256 iterations, uint256 claims, uint256 lastProcessedIndex) = dividendTracker.process(gas);
    emit ProcessedDividendTracker(iterations, claims, lastProcessedIndex, false, gas, tx.origin);
  }

  function claim() external {
    dividendTracker.processAccount(msg.sender, false);
  }

  function getLastProcessedIndex() external view returns (uint256) {
    return dividendTracker.getLastProcessedIndex();
  }

  function getNumberOfDividendTokenHolders() external view returns (uint256) {
    return dividendTracker.getNumberOfTokenHolders();
  }

  function _transfer(
    address from,
    address to,
    uint256 amount
  ) internal override {
    require(from != address(0), "ERC20: transfer from the zero address");
    require(to != address(0), "ERC20: transfer to the zero address");
    require(!_isBlacklisted[from] && !_isBlacklisted[to], "Blacklisted address");

    if (enableAntiBot) {
      pinkAntiBot.onPreTransferCheck(from, to, amount);
    }

    if (amount == 0) {
      super._transfer(from, to, 0);
      return;
    }

    uint256 contractTokenBalance = balanceOf(address(this));

    bool canSwap = contractTokenBalance >= swapTokensAtAmount;

    if (
      canSwap && !swapping && !automatedMarketMakerPairs[from] && from != owner() && to != owner()
    ) {
      swapping = true;

      uint256 marketingTokens = contractTokenBalance.mul(marketingFee).div(totalFees);
      swapAndSendToFee(marketingTokens);

      uint256 swapTokens = contractTokenBalance.mul(liquidityFee).div(totalFees);
      swapAndLiquify(swapTokens);

      uint256 sellTokens = balanceOf(address(this));
      swapAndSendDividends(sellTokens);

      swapping = false;
    }

    bool takeFee = !swapping;

    // if any account belongs to _isExcludedFromFee account then remove the fee
    if (_isExcludedFromFees[from] || _isExcludedFromFees[to]) {
      takeFee = false;
    }

    if (takeFee) {
      uint256 fees = amount.mul(totalFees).div(100);
      if (automatedMarketMakerPairs[to]) {
        fees += amount.mul(1).div(100);
      }
      amount = amount.sub(fees);

      super._transfer(from, address(this), fees);
    }

    super._transfer(from, to, amount);

    try dividendTracker.setBalance(payable(from), balanceOf(from)) {} catch {}
    try dividendTracker.setBalance(payable(to), balanceOf(to)) {} catch {}

    if (!swapping) {
      uint256 gas = gasForProcessing;

      try dividendTracker.process(gas) returns (
        uint256 iterations,
        uint256 claims,
        uint256 lastProcessedIndex
      ) {
        emit ProcessedDividendTracker(iterations, claims, lastProcessedIndex, true, gas, tx.origin);
      } catch {}
    }
  }

  function swapAndSendToFee(uint256 tokens) private {
    uint256 initialCAKEBalance = IERC20(rewardToken).balanceOf(address(this));

    swapTokensForCake(tokens);
    uint256 newBalance = (IERC20(rewardToken).balanceOf(address(this))).sub(initialCAKEBalance);
    IERC20(rewardToken).transfer(_marketingWalletAddress, newBalance);
  }

  function swapAndLiquify(uint256 tokens) private {
    // split the contract balance into halves
    uint256 half = tokens.div(2);
    uint256 otherHalf = tokens.sub(half);

    // capture the contract's current ETH balance.
    // this is so that we can capture exactly the amount of ETH that the
    // swap creates, and not make the liquidity event include any ETH that
    // has been manually sent to the contract
    uint256 initialBalance = address(this).balance;

    // swap tokens for ETH
    swapTokensForEth(half); // <- this breaks the ETH -> HATE swap when swap+liquify is triggered

    // how much ETH did we just swap into?
    uint256 newBalance = address(this).balance.sub(initialBalance);

    // add liquidity to uniswap
    addLiquidity(otherHalf, newBalance);

    emit SwapAndLiquify(half, newBalance, otherHalf);
  }

  function swapTokensForEth(uint256 tokenAmount) private {
    // generate the uniswap pair path of token -> weth
    address[] memory path = new address[](2);
    path[0] = address(this);
    path[1] = uniswapV2Router.WETH();

    _approve(address(this), address(uniswapV2Router), tokenAmount);

    // make the swap
    uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(
      tokenAmount,
      0, // accept any amount of ETH
      path,
      address(this),
      block.timestamp
    );
  }

  function swapTokensForCake(uint256 tokenAmount) private {
    address[] memory path = new address[](3);
    path[0] = address(this);
    path[1] = uniswapV2Router.WETH();
    path[2] = rewardToken;

    _approve(address(this), address(uniswapV2Router), tokenAmount);

    // make the swap
    uniswapV2Router.swapExactTokensForTokensSupportingFeeOnTransferTokens(
      tokenAmount,
      0,
      path,
      address(this),
      block.timestamp
    );
  }

  function addLiquidity(uint256 tokenAmount, uint256 ethAmount) private {
    // approve token transfer to cover all possible scenarios
    _approve(address(this), address(uniswapV2Router), tokenAmount);

    // add the liquidity
    uniswapV2Router.addLiquidityETH{ value: ethAmount }(
      address(this),
      tokenAmount,
      0, // slippage is unavoidable
      0, // slippage is unavoidable
      address(0),
      block.timestamp
    );
  }

  function swapAndSendDividends(uint256 tokens) private {
    swapTokensForCake(tokens);
    uint256 dividends = IERC20(rewardToken).balanceOf(address(this));
    bool success = IERC20(rewardToken).transfer(address(dividendTracker), dividends);

    if (success) {
      dividendTracker.distributeCAKEDividends(dividends);
      emit SendDividends(tokens, dividends);
    }
  }
}

contract BABYTOKENDividendTracker is OwnableUpgradeable, DividendPayingToken {
  using SafeMath for uint256;
  using SafeMathInt for int256;
  using IterableMapping for IterableMapping.Map;

  IterableMapping.Map private tokenHoldersMap;
  uint256 public lastProcessedIndex;

  mapping(address => bool) public excludedFromDividends;

  mapping(address => uint256) public lastClaimTimes;

  uint256 public claimWait;
  uint256 public minimumTokenBalanceForDividends;

  event ExcludeFromDividends(address indexed account);
  event ClaimWaitUpdated(uint256 indexed newValue, uint256 indexed oldValue);

  event Claim(address indexed account, uint256 amount, bool indexed automatic);

  function initialize(address rewardToken_, uint256 minimumTokenBalanceForDividends_)
    external
    initializer
  {
    DividendPayingToken.__DividendPayingToken_init(
      rewardToken_,
      "DIVIDEND_TRACKER",
      "DIVIDEND_TRACKER"
    );
    claimWait = 3600;
    minimumTokenBalanceForDividends = minimumTokenBalanceForDividends_;
  }

  function _transfer(
    address,
    address,
    uint256
  ) internal pure override {
    require(false, "Dividend_Tracker: No transfers allowed");
  }

  function withdrawDividend() public pure override {
    require(
      false,
      "Dividend_Tracker: withdrawDividend disabled. Use the 'claim' function on the main BABYTOKEN contract."
    );
  }

  function excludeFromDividends(address account) external onlyOwner {
    require(!excludedFromDividends[account]);
    excludedFromDividends[account] = true;

    _setBalance(account, 0);
    tokenHoldersMap.remove(account);

    emit ExcludeFromDividends(account);
  }

  function updateClaimWait(uint256 newClaimWait) external onlyOwner {
    require(
      newClaimWait >= 3600 && newClaimWait <= 86400,
      "Dividend_Tracker: claimWait must be updated to between 1 and 24 hours"
    );
    require(newClaimWait != claimWait, "Dividend_Tracker: Cannot update claimWait to same value");
    emit ClaimWaitUpdated(newClaimWait, claimWait);
    claimWait = newClaimWait;
  }

  function getLastProcessedIndex() external view returns (uint256) {
    return lastProcessedIndex;
  }

  function getNumberOfTokenHolders() external view returns (uint256) {
    return tokenHoldersMap.keys.length;
  }

  function getAccount(address _account)
    public
    view
    returns (
      address account,
      int256 index,
      int256 iterationsUntilProcessed,
      uint256 withdrawableDividends,
      uint256 totalDividends,
      uint256 lastClaimTime,
      uint256 nextClaimTime,
      uint256 secondsUntilAutoClaimAvailable
    )
  {
    account = _account;

    index = tokenHoldersMap.getIndexOfKey(account);

    iterationsUntilProcessed = -1;

    if (index >= 0) {
      if (uint256(index) > lastProcessedIndex) {
        iterationsUntilProcessed = index.sub(int256(lastProcessedIndex));
      } else {
        uint256 processesUntilEndOfArray = tokenHoldersMap.keys.length > lastProcessedIndex
          ? tokenHoldersMap.keys.length.sub(lastProcessedIndex)
          : 0;

        iterationsUntilProcessed = index.add(int256(processesUntilEndOfArray));
      }
    }

    withdrawableDividends = withdrawableDividendOf(account);
    totalDividends = accumulativeDividendOf(account);

    lastClaimTime = lastClaimTimes[account];

    nextClaimTime = lastClaimTime > 0 ? lastClaimTime.add(claimWait) : 0;

    secondsUntilAutoClaimAvailable = nextClaimTime > block.timestamp
      ? nextClaimTime.sub(block.timestamp)
      : 0;
  }

  function getAccountAtIndex(uint256 index)
    public
    view
    returns (
      address,
      int256,
      int256,
      uint256,
      uint256,
      uint256,
      uint256,
      uint256
    )
  {
    if (index >= tokenHoldersMap.size()) {
      return (address(0), -1, -1, 0, 0, 0, 0, 0);
    }

    address account = tokenHoldersMap.getKeyAtIndex(index);

    return getAccount(account);
  }

  function canAutoClaim(uint256 lastClaimTime) private view returns (bool) {
    if (lastClaimTime > block.timestamp) {
      return false;
    }

    return block.timestamp.sub(lastClaimTime) >= claimWait;
  }

  function setBalance(address payable account, uint256 newBalance) external onlyOwner {
    if (excludedFromDividends[account]) {
      return;
    }
    if (newBalance >= minimumTokenBalanceForDividends) {
      _setBalance(account, newBalance);
      tokenHoldersMap.set(account, newBalance);
    } else {
      _setBalance(account, 0);
      tokenHoldersMap.remove(account);
    }
    processAccount(account, true);
  }

  function process(uint256 gas)
    public
    returns (
      uint256,
      uint256,
      uint256
    )
  {
    uint256 numberOfTokenHolders = tokenHoldersMap.keys.length;

    if (numberOfTokenHolders == 0) {
      return (0, 0, lastProcessedIndex);
    }

    uint256 _lastProcessedIndex = lastProcessedIndex;

    uint256 gasUsed = 0;

    uint256 gasLeft = gasleft();

    uint256 iterations = 0;
    uint256 claims = 0;

    while (gasUsed < gas && iterations < numberOfTokenHolders) {
      _lastProcessedIndex++;

      if (_lastProcessedIndex >= tokenHoldersMap.keys.length) {
        _lastProcessedIndex = 0;
      }

      address account = tokenHoldersMap.keys[_lastProcessedIndex];

      if (canAutoClaim(lastClaimTimes[account])) {
        if (processAccount(payable(account), true)) {
          claims++;
        }
      }

      iterations++;

      uint256 newGasLeft = gasleft();

      if (gasLeft > newGasLeft) {
        gasUsed = gasUsed.add(gasLeft.sub(newGasLeft));
      }

      gasLeft = newGasLeft;
    }

    lastProcessedIndex = _lastProcessedIndex;

    return (iterations, claims, lastProcessedIndex);
  }

  function processAccount(address payable account, bool automatic) public onlyOwner returns (bool) {
    uint256 amount = _withdrawDividendOfUser(account);

    if (amount > 0) {
      lastClaimTimes[account] = block.timestamp;
      emit Claim(account, amount, automatic);
      return true;
    }

    return false;
  }
}

Contract ABI

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Block Transaction Gas Used Reward
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Block Uncle Number Difficulty Gas Used Reward
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