Standard input causing the bug

input.json

{"language":"Solidity","sources":{"ChiToken.sol":{"content":"/**\n *Submitted for verification at Etherscan.io on 20XX-XX-XX\n*/\n\n/*\r\n                                                                 ,╖╗#▒▓▓▓▓▓╣╬╣▓▓▓▓▒#╗╗╓,\r\n                                                           ,╗@▓╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬▓▓╗╖\r\n                                                       ╓#▓╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╝▀╠╠▄╣╝╜\"\"\"╙╙▀╝╝╣╬╬╬╬▓▌╖\r\n                                                    ╓▓╣╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬▀`╓å▓▓▓╙  ,▄▓▓██▓▓▓▄▄▄▄▄╠╠╙╠▄▄\r\n                                                 ╓@╣╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬▌  ê`'     *▀▀▀▀▀▀▀▓██████████████▄\r\n                                               ╔▓╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬                      ╙▀████████████▌\r\n                                             ╓▓╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬                         ╙████████████▌\r\n                                           ,▓╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬▓▀                          ╗▄█████████████▄\r\n                                          é╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬▓▌   #╙                       ╙▀█████████████▓\r\n                                         ╣╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬▀              ╙▓╬╣▓▄            ╙▀▀███████████µ\r\n                                        ▓╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬▀╣╝╙             ╒▓╬╬╬╬╬╬▓         ╙████████████████µ\r\n                                       ▓╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬▌              ╖╖╖▄▓╬╬╬╬╬╬╬▓         █████████████████µ\r\n                                      ╣╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬        ,#▓╣╬╬▓╬╬╬╬╬╬╬╬╬╬╬╬▌         ▓█████████████████\r\n                                     ]╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╓╖     ]╣╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╣╨          ██████████████████▌\r\n                                     ▓╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬▓▌╖,   ╙╠╠▓╬╬╬╬╬╬╬╬╬▓╝╙           ╫███████████████████\r\n                                    ]╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╝▀╙              ▓████████████████████▌\r\n                                    ║╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╝▀╙`                 ▄███████████████████████\r\n                                    ╟╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬▓╝▀╙                     ,▄█████████████████████████\r\n                                    ╟╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╝╜`                       ▄▓████████████████████████████\r\n                                    ║╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╣▀`                     ,▄▄▓████████████████████████████████\r\n                                    ▐╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬▓╙                       ,,,▄╠▓██████████████████████████████▌\r\n                                     ╣╬╬╬╬╬╬╬╬╬╬╬╬╬╬▓╙╔▒`               ╓▄▓████████████████████████████████████████⌐\r\n                                     ╚╬╬╬╬╬╬╬╬╬╬╬╬╬▓▓╣▓              ▄▓████████████████████████████████████████████\r\n                                      ▓╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬             ▄██████████████████████████████████████████████⌐\r\n                                       ╣╬╬╬╬╬╬╬╬╬╬╬╬╬╛           ▄███████████████████████████████████████████████▌\r\n                                       └╣╬╬╬╬╬╬╬╬╬╬╬▓           ▄███████████████████████████████████████████████▌\r\n                                        └▓╬╬╬╬╬╬╬╬╬╬Γ          ]███████████████████████████████████████████████▀\r\n                                          ╣╬╬╬╬╬╬╬╬╬⌐          ╫████████████████████████████████▀▀▀▀▀▓████████╜\r\n                                           ╙╬╬╬╬╬╬╬╬⌐          ╟███████████████████████████▀╙    ,▄▓▓▓▓▓████▓\r\n                                             ╫╬╬╬╬╬╬b           ████████████████████████▀`    ,Φ▀▀█████████╙\r\n                                               ╫╬╬╬╬▌╟           ██████████████████▀╓▀─       ▄▓█████████▀\r\n                                                 ╚╣╬▓╣▓           └▀████████████▀`         ╓▓█████████▓╙\r\n                                                   ╙╝╬╬▓             .▄▄▓█▀▀▀`           ▄▓█████████▀\r\n                                                      ╙▀▓▄                            ƒ,▓███████▀▀\r\n                                                          \"                        ╓▓█▓█████▀▀└\r\n                                                                               ╓▄▓████▀▀╙└\r\n\r\n ██████╗██╗  ██╗██╗     ██████╗  █████╗ ███████╗████████╗ ██████╗ ██╗  ██╗███████╗███╗   ██╗    ██████╗ ██╗   ██╗     ██╗██╗███╗   ██╗ ██████╗██╗  ██╗\r\n██╔════╝██║  ██║██║    ██╔════╝ ██╔══██╗██╔════╝╚══██╔══╝██╔═══██╗██║ ██╔╝██╔════╝████╗  ██║    ██╔══██╗╚██╗ ██╔╝    ███║██║████╗  ██║██╔════╝██║  ██║\r\n██║     ███████║██║    ██║  ███╗███████║███████╗   ██║   ██║   ██║█████╔╝ █████╗  ██╔██╗ ██║    ██████╔╝ ╚████╔╝     ╚██║██║██╔██╗ ██║██║     ███████║\r\n██║     ██╔══██║██║    ██║   ██║██╔══██║╚════██║   ██║   ██║   ██║██╔═██╗ ██╔══╝  ██║╚██╗██║    ██╔══██╗  ╚██╔╝       ██║██║██║╚██╗██║██║     ██╔══██║\r\n╚██████╗██║  ██║██║    ╚██████╔╝██║  ██║███████║   ██║   ╚██████╔╝██║  ██╗███████╗██║ ╚████║    ██████╔╝   ██║        ██║██║██║ ╚████║╚██████╗██║  ██║\r\n ╚═════╝╚═╝  ╚═╝╚═╝     ╚═════╝ ╚═╝  ╚═╝╚══════╝   ╚═╝    ╚═════╝ ╚═╝  ╚═╝╚══════╝╚═╝  ╚═══╝    ╚═════╝    ╚═╝        ╚═╝╚═╝╚═╝  ╚═══╝ ╚═════╝╚═╝  ╚═╝\r\n\r\n                                                             Copyright by 1inch Corporation\r\n                                                                 https://1inch.exchange\r\n\r\n---\r\nDeployer wallet address:\r\n0x7E1E3334130355799F833ffec2D731BCa3E68aF6\r\n\r\nSigned raw transaction for chainId 1:\r\n0xf90d7f808506fc23ac00830bd0fa8080b90d2c608060405234801561001057600080fd5b50610d0c806100206000396000f3fe608060405234801561001057600080fd5b506004361061010b5760003560e01c806370a08231116100a2578063a9059cbb11610071578063a9059cbb14610305578063b0ac19a014610331578063d89135cd1461036a578063d8ccd0f314610372578063dd62ed3e1461038f5761010b565b806370a08231146102b057806395d89b41146102d6578063a0712d68146102de578063a2309ff8146102fd5761010b565b806323b872dd116100de57806323b872dd14610213578063313ce567146102495780635f2e2b45146102675780636366b936146102935761010b565b806306fdde0314610110578063079d229f1461018d578063095ea7b3146101cb57806318160ddd1461020b575b600080fd5b6101186103bd565b6040805160208082528351818301528351919283929083019185019080838360005b8381101561015257818101518382015260200161013a565b50505050905090810190601f16801561017f5780820380516001836020036101000a031916815260200191505b509250505060405180910390f35b6101b9600480360360408110156101a357600080fd5b506001600160a01b0381351690602001356103ee565b60408051918252519081900360200190f35b6101f7600480360360408110156101e157600080fd5b506001600160a01b03813516906020013561041f565b604080519115158252519081900360200190f35b6101b9610435565b6101f76004803603606081101561022957600080fd5b506001600160a01b03813581169160208101359091169060400135610453565b6102516104c2565b6040805160ff9092168252519081900360200190f35b6101b96004803603604081101561027d57600080fd5b506001600160a01b0381351690602001356104c7565b6101b9600480360360208110156102a957600080fd5b50356104e2565b6101b9600480360360208110156102c657600080fd5b50356001600160a01b03166104ff565b61011861051a565b6102fb600480360360208110156102f457600080fd5b5035610539565b005b6101b961070d565b6101f76004803603604081101561031b57600080fd5b506001600160a01b038135169060200135610713565b61034e6004803603602081101561034757600080fd5b5035610720565b604080516001600160a01b039092168252519081900360200190f35b6101b961078b565b6101b96004803603602081101561038857600080fd5b5035610791565b6101b9600480360360408110156103a557600080fd5b506001600160a01b03813581169160200135166107aa565b60405180604001604052806015815260200174086d0d2408ec2e6e8ded6cadc40c4f24062d2dcc6d605b1b81525081565b60006104188361041361040985610404886104ff565b6107d5565b61040487336107aa565b6104c7565b9392505050565b600061042c3384846107eb565b50600192915050565b600061044e60035460025461084d90919063ffffffff16565b905090565b600061046084848461088f565b6104b884336104b385604051806060016040528060288152602001610c8b602891396001600160a01b038a166000908152600160209081526040808320338452909152902054919063ffffffff61096116565b6107eb565b5060019392505050565b600081565b60006104d383836109f8565b6104dc82610a59565b50919050565b60006104f96104f483610404336104ff565b610791565b92915050565b6001600160a01b031660009081526020819052604090205490565b6040518060400160405280600381526020016243484960e81b81525081565b6002547f746d4946c0e9f43f4dee607b0ef1fa1c3318585733ff6000526015600bf30000600052602082045b80156106d85781601e600080f55060018201601e600080f55060028201601e600080f55060038201601e600080f55060048201601e600080f55060058201601e600080f55060068201601e600080f55060078201601e600080f55060088201601e600080f55060098201601e600080f550600a8201601e600080f550600b8201601e600080f550600c8201601e600080f550600d8201601e600080f550600e8201601e600080f550600f8201601e600080f55060108201601e600080f55060118201601e600080f55060128201601e600080f55060138201601e600080f55060148201601e600080f55060158201601e600080f55060168201601e600080f55060178201601e600080f55060188201601e600080f55060198201601e600080f550601a8201601e600080f550601b8201601e600080f550601c8201601e600080f550601d8201601e600080f550601e8201601e600080f550601f8201601e600080f5506020919091019060001901610565565b50601f82165b80156106fc5781601e600080f55060019190910190600019016106de565b506107073383610ad1565b60025550565b60025481565b600061042c33848461088f565b604080516001600160f81b03196020808301919091523060601b602183015260358201939093527f3c1644c68e5d6cb380c36d1bf847fdbc0c7ac28030025a2fc5e63cce23c16348605580830191909152825180830390910181526075909101909152805191012090565b60035481565b600061079d3383610b50565b6107a682610a59565b5090565b6001600160a01b03918216600090815260016020908152604080832093909416825291909152205490565b60008183106107e45781610418565b5090919050565b6001600160a01b03808416600081815260016020908152604080832094871680845294825291829020859055815185815291517f8c5be1e5ebec7d5bd14f71427d1e84f3dd0314c0f7b2291e5b200ac8c7c3b9259281900390910190a3505050565b600061041883836040518060400160405280601e81526020017f536166654d6174683a207375627472616374696f6e206f766572666c6f770000815250610961565b6108d281604051806060016040528060268152602001610c65602691396001600160a01b038616600090815260208190526040902054919063ffffffff61096116565b6001600160a01b038085166000908152602081905260408082209390935590841681522054610907908263ffffffff610be816565b6001600160a01b038084166000818152602081815260409182902094909455805185815290519193928716927fddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef92918290030190a3505050565b600081848411156109f05760405162461bcd60e51b81526004018080602001828103825283818151815260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File: @openzeppelin/contracts/math/Math.sol\r\n\r\npragma solidity ^0.6.0;\r\n\r\n/**\r\n * @dev Standard math utilities missing in the Solidity language.\r\n */\r\nlibrary Math {\r\n    /**\r\n     * @dev Returns the largest of two numbers.\r\n     */\r\n    function max(uint256 a, uint256 b) internal pure returns (uint256) {\r\n        return a >= b ? a : b;\r\n    }\r\n\r\n    /**\r\n     * @dev Returns the smallest of two numbers.\r\n     */\r\n    function min(uint256 a, uint256 b) internal pure returns (uint256) {\r\n        return a < b ? a : b;\r\n    }\r\n\r\n    /**\r\n     * @dev Returns the average of two numbers. The result is rounded towards\r\n     * zero.\r\n     */\r\n    function average(uint256 a, uint256 b) internal pure returns (uint256) {\r\n        // (a + b) / 2 can overflow, so we distribute\r\n        return (a / 2) + (b / 2) + ((a % 2 + b % 2) / 2);\r\n    }\r\n}\r\n\r\n// File: @openzeppelin/contracts/math/SafeMath.sol\r\n\r\npragma solidity ^0.6.0;\r\n\r\n/**\r\n * @dev Wrappers over Solidity's arithmetic operations with added overflow\r\n * checks.\r\n *\r\n * Arithmetic operations in Solidity wrap on overflow. This can easily result\r\n * in bugs, because programmers usually assume that an overflow raises an\r\n * error, which is the standard behavior in high level programming languages.\r\n * `SafeMath` restores this intuition by reverting the transaction when an\r\n * operation overflows.\r\n *\r\n * Using this library instead of the unchecked operations eliminates an entire\r\n * class of bugs, so it's recommended to use it always.\r\n */\r\nlibrary SafeMath {\r\n    /**\r\n     * @dev Returns the addition of two unsigned integers, reverting on\r\n     * overflow.\r\n     *\r\n     * Counterpart to Solidity's `+` operator.\r\n     *\r\n     * Requirements:\r\n     * - Addition cannot overflow.\r\n     */\r\n    function add(uint256 a, uint256 b) internal pure returns (uint256) {\r\n        uint256 c = a + b;\r\n        require(c >= a, \"SafeMath: addition overflow\");\r\n\r\n        return c;\r\n    }\r\n\r\n    /**\r\n     * @dev Returns the subtraction of two unsigned integers, reverting on\r\n     * overflow (when the result is negative).\r\n     *\r\n     * Counterpart to Solidity's `-` operator.\r\n     *\r\n     * Requirements:\r\n     * - Subtraction cannot overflow.\r\n     */\r\n    function sub(uint256 a, uint256 b) internal pure returns (uint256) {\r\n        return sub(a, b, \"SafeMath: subtraction overflow\");\r\n    }\r\n\r\n    /**\r\n     * @dev Returns the subtraction of two unsigned integers, reverting with custom message on\r\n     * overflow (when the result is negative).\r\n     *\r\n     * Counterpart to Solidity's `-` operator.\r\n     *\r\n     * Requirements:\r\n     * - Subtraction cannot overflow.\r\n     */\r\n    function sub(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {\r\n        require(b <= a, errorMessage);\r\n        uint256 c = a - b;\r\n\r\n        return c;\r\n    }\r\n\r\n    /**\r\n     * @dev Returns the multiplication of two unsigned integers, reverting on\r\n     * overflow.\r\n     *\r\n     * Counterpart to Solidity's `*` operator.\r\n     *\r\n     * Requirements:\r\n     * - Multiplication cannot overflow.\r\n     */\r\n    function mul(uint256 a, uint256 b) internal pure returns (uint256) {\r\n        // Gas optimization: this is cheaper than requiring 'a' not being zero, but the\r\n        // benefit is lost if 'b' is also tested.\r\n        // See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522\r\n        if (a == 0) {\r\n            return 0;\r\n        }\r\n\r\n        uint256 c = a * b;\r\n        require(c / a == b, \"SafeMath: multiplication overflow\");\r\n\r\n        return c;\r\n    }\r\n\r\n    /**\r\n     * @dev Returns the integer division of two unsigned integers. Reverts on\r\n     * division by zero. The result is rounded towards zero.\r\n     *\r\n     * Counterpart to Solidity's `/` operator. Note: this function uses a\r\n     * `revert` opcode (which leaves remaining gas untouched) while Solidity\r\n     * uses an invalid opcode to revert (consuming all remaining gas).\r\n     *\r\n     * Requirements:\r\n     * - The divisor cannot be zero.\r\n     */\r\n    function div(uint256 a, uint256 b) internal pure returns (uint256) {\r\n        return div(a, b, \"SafeMath: division by zero\");\r\n    }\r\n\r\n    /**\r\n     * @dev Returns the integer division of two unsigned integers. Reverts with custom message on\r\n     * division by zero. The result is rounded towards zero.\r\n     *\r\n     * Counterpart to Solidity's `/` operator. Note: this function uses a\r\n     * `revert` opcode (which leaves remaining gas untouched) while Solidity\r\n     * uses an invalid opcode to revert (consuming all remaining gas).\r\n     *\r\n     * Requirements:\r\n     * - The divisor cannot be zero.\r\n     */\r\n    function div(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {\r\n        // Solidity only automatically asserts when dividing by 0\r\n        require(b > 0, errorMessage);\r\n        uint256 c = a / b;\r\n        // assert(a == b * c + a % b); // There is no case in which this doesn't hold\r\n\r\n        return c;\r\n    }\r\n\r\n    /**\r\n     * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),\r\n     * Reverts when dividing by zero.\r\n     *\r\n     * Counterpart to Solidity's `%` operator. This function uses a `revert`\r\n     * opcode (which leaves remaining gas untouched) while Solidity uses an\r\n     * invalid opcode to revert (consuming all remaining gas).\r\n     *\r\n     * Requirements:\r\n     * - The divisor cannot be zero.\r\n     */\r\n    function mod(uint256 a, uint256 b) internal pure returns (uint256) {\r\n        return mod(a, b, \"SafeMath: modulo by zero\");\r\n    }\r\n\r\n    /**\r\n     * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),\r\n     * Reverts with custom message when dividing by zero.\r\n     *\r\n     * Counterpart to Solidity's `%` operator. This function uses a `revert`\r\n     * opcode (which leaves remaining gas untouched) while Solidity uses an\r\n     * invalid opcode to revert (consuming all remaining gas).\r\n     *\r\n     * Requirements:\r\n     * - The divisor cannot be zero.\r\n     */\r\n    function mod(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {\r\n        require(b != 0, errorMessage);\r\n        return a % b;\r\n    }\r\n}\r\n\r\n// File: @openzeppelin/contracts/token/ERC20/IERC20.sol\r\n\r\npragma solidity ^0.6.0;\r\n\r\n/**\r\n * @dev Interface of the ERC20 standard as defined in the EIP.\r\n */\r\ninterface IERC20 {\r\n    /**\r\n     * @dev Returns the amount of tokens in existence.\r\n     */\r\n    function totalSupply() external view returns (uint256);\r\n\r\n    /**\r\n     * @dev Returns the amount of tokens owned by `account`.\r\n     */\r\n    function balanceOf(address account) external view returns (uint256);\r\n\r\n    /**\r\n     * @dev Moves `amount` tokens from the caller's account to `recipient`.\r\n     *\r\n     * Returns a boolean value indicating whether the operation succeeded.\r\n     *\r\n     * Emits a {Transfer} event.\r\n     */\r\n    function transfer(address recipient, uint256 amount) external returns (bool);\r\n\r\n    /**\r\n     * @dev Returns the remaining number of tokens that `spender` will be\r\n     * allowed to spend on behalf of `owner` through {transferFrom}. This is\r\n     * zero by default.\r\n     *\r\n     * This value changes when {approve} or {transferFrom} are called.\r\n     */\r\n    function allowance(address owner, address spender) external view returns (uint256);\r\n\r\n    /**\r\n     * @dev Sets `amount` as the allowance of `spender` over the caller's tokens.\r\n     *\r\n     * Returns a boolean value indicating whether the operation succeeded.\r\n     *\r\n     * IMPORTANT: Beware that changing an allowance with this method brings the risk\r\n     * that someone may use both the old and the new allowance by unfortunate\r\n     * transaction ordering. One possible solution to mitigate this race\r\n     * condition is to first reduce the spender's allowance to 0 and set the\r\n     * desired value afterwards:\r\n     * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729\r\n     *\r\n     * Emits an {Approval} event.\r\n     */\r\n    function approve(address spender, uint256 amount) external returns (bool);\r\n\r\n    /**\r\n     * @dev Moves `amount` tokens from `sender` to `recipient` using the\r\n     * allowance mechanism. `amount` is then deducted from the caller's\r\n     * allowance.\r\n     *\r\n     * Returns a boolean value indicating whether the operation succeeded.\r\n     *\r\n     * Emits a {Transfer} event.\r\n     */\r\n    function transferFrom(address sender, address recipient, uint256 amount) external returns (bool);\r\n\r\n    /**\r\n     * @dev Emitted when `value` tokens are moved from one account (`from`) to\r\n     * another (`to`).\r\n     *\r\n     * Note that `value` may be zero.\r\n     */\r\n    event Transfer(address indexed from, address indexed to, uint256 value);\r\n\r\n    /**\r\n     * @dev Emitted when the allowance of a `spender` for an `owner` is set by\r\n     * a call to {approve}. `value` is the new allowance.\r\n     */\r\n    event Approval(address indexed owner, address indexed spender, uint256 value);\r\n}\r\n\r\n// File: contracts/ChiToken.sol\r\n\r\npragma solidity ^0.6.0;\r\n\r\n\r\n\r\n\r\n\r\nabstract contract ERC20WithoutTotalSupply is IERC20 {\r\n    using SafeMath for uint256;\r\n\r\n    mapping(address => uint256) private _balances;\r\n    mapping(address => mapping(address => uint256)) private _allowances;\r\n\r\n    function balanceOf(address account) public view override returns (uint256) {\r\n        return _balances[account];\r\n    }\r\n\r\n    function allowance(address owner, address spender) public view override returns (uint256) {\r\n        return _allowances[owner][spender];\r\n    }\r\n\r\n    function transfer(address recipient, uint256 amount) public override returns (bool) {\r\n        _transfer(msg.sender, recipient, amount);\r\n        return true;\r\n    }\r\n\r\n    function approve(address spender, uint256 amount) public override returns (bool) {\r\n        _approve(msg.sender, spender, amount);\r\n        return true;\r\n    }\r\n\r\n    function transferFrom(address sender, address recipient, uint256 amount) public override returns (bool) {\r\n        _transfer(sender, recipient, amount);\r\n        _approve(sender, msg.sender, _allowances[sender][msg.sender].sub(amount, \"ERC20: transfer amount exceeds allowance\"));\r\n        return true;\r\n    }\r\n\r\n    function _transfer(address sender, address recipient, uint256 amount) internal {\r\n        _balances[sender] = _balances[sender].sub(amount, \"ERC20: transfer amount exceeds balance\");\r\n        _balances[recipient] = _balances[recipient].add(amount);\r\n        emit Transfer(sender, recipient, amount);\r\n    }\r\n\r\n    function _approve(address owner, address spender, uint256 amount) internal {\r\n        _allowances[owner][spender] = amount;\r\n        emit Approval(owner, spender, amount);\r\n    }\r\n\r\n    function _mint(address account, uint256 amount) internal {\r\n        _balances[account] = _balances[account].add(amount);\r\n        emit Transfer(address(0), account, amount);\r\n    }\r\n\r\n    function _burn(address account, uint256 amount) internal {\r\n        _balances[account] = _balances[account].sub(amount, \"ERC20: burn amount exceeds balance\");\r\n        emit Transfer(account, address(0), amount);\r\n    }\r\n\r\n    function _burnFrom(address account, uint256 amount) internal {\r\n        _burn(account, amount);\r\n        _approve(account, msg.sender, _allowances[account][msg.sender].sub(amount, \"ERC20: burn amount exceeds allowance\"));\r\n    }\r\n}\r\n\r\n\r\ncontract ChiToken is IERC20, ERC20WithoutTotalSupply {\r\n    string constant public name = \"Chi Gastoken by 1inch\";\r\n    string constant public symbol = \"CHI\";\r\n    uint8 constant public decimals = 0;\r\n\r\n    uint256 public totalMinted;\r\n    uint256 public totalBurned;\r\n\r\n    function totalSupply() public view override returns(uint256) {\r\n        return totalMinted.sub(totalBurned);\r\n    }\r\n\r\n    function mint(uint256 value) public {\r\n        uint256 offset = totalMinted;\r\n        assembly {\r\n            mstore(0, 0x746d4946c0e9F43F4Dee607b0eF1fA1c3318585733ff6000526015600bf30000)\r\n\r\n            for {let i := div(value, 32)} i {i := sub(i, 1)} {\r\n                pop(create2(0, 0, 30, add(offset, 0))) pop(create2(0, 0, 30, add(offset, 1)))\r\n                pop(create2(0, 0, 30, add(offset, 2))) pop(create2(0, 0, 30, add(offset, 3)))\r\n                pop(create2(0, 0, 30, add(offset, 4))) pop(create2(0, 0, 30, add(offset, 5)))\r\n                pop(create2(0, 0, 30, add(offset, 6))) pop(create2(0, 0, 30, add(offset, 7)))\r\n                pop(create2(0, 0, 30, add(offset, 8))) pop(create2(0, 0, 30, add(offset, 9)))\r\n                pop(create2(0, 0, 30, add(offset, 10))) pop(create2(0, 0, 30, add(offset, 11)))\r\n                pop(create2(0, 0, 30, add(offset, 12))) pop(create2(0, 0, 30, add(offset, 13)))\r\n                pop(create2(0, 0, 30, add(offset, 14))) pop(create2(0, 0, 30, add(offset, 15)))\r\n                pop(create2(0, 0, 30, add(offset, 16))) pop(create2(0, 0, 30, add(offset, 17)))\r\n                pop(create2(0, 0, 30, add(offset, 18))) pop(create2(0, 0, 30, add(offset, 19)))\r\n                pop(create2(0, 0, 30, add(offset, 20))) pop(create2(0, 0, 30, add(offset, 21)))\r\n                pop(create2(0, 0, 30, add(offset, 22))) pop(create2(0, 0, 30, add(offset, 23)))\r\n                pop(create2(0, 0, 30, add(offset, 24))) pop(create2(0, 0, 30, add(offset, 25)))\r\n                pop(create2(0, 0, 30, add(offset, 26))) pop(create2(0, 0, 30, add(offset, 27)))\r\n                pop(create2(0, 0, 30, add(offset, 28))) pop(create2(0, 0, 30, add(offset, 29)))\r\n                pop(create2(0, 0, 30, add(offset, 30))) pop(create2(0, 0, 30, add(offset, 31)))\r\n                offset := add(offset, 32)\r\n            }\r\n\r\n            for {let i := and(value, 0x1F)} i {i := sub(i, 1)} {\r\n                pop(create2(0, 0, 30, offset))\r\n                offset := add(offset, 1)\r\n            }\r\n        }\r\n\r\n        _mint(msg.sender, value);\r\n        totalMinted = offset;\r\n    }\r\n\r\n    function computeAddress2(uint256 salt) public view returns (address) {\r\n        bytes32 _data = keccak256(\r\n            abi.encodePacked(bytes1(0xff), address(this), salt, bytes32(0x3c1644c68e5d6cb380c36d1bf847fdbc0c7ac28030025a2fc5e63cce23c16348))\r\n        );\r\n        return address(uint256(_data));\r\n    }\r\n\r\n    function _destroyChildren(uint256 value) internal {\r\n        uint256 _totalBurned = totalBurned;\r\n        for (uint256 i = 0; i < value; i++) {\r\n            computeAddress2(_totalBurned + i).call(\"\");\r\n        }\r\n        totalBurned = _totalBurned + value;\r\n    }\r\n\r\n    function free(uint256 value) public returns (uint256)  {\r\n        _burn(msg.sender, value);\r\n        _destroyChildren(value);\r\n        return value;\r\n    }\r\n\r\n    function freeUpTo(uint256 value) public returns (uint256) {\r\n        return free(Math.min(value, balanceOf(msg.sender)));\r\n    }\r\n\r\n    function freeFrom(address from, uint256 value) public returns (uint256) {\r\n        _burnFrom(from, value);\r\n        _destroyChildren(value);\r\n        return value;\r\n    }\r\n\r\n    function freeFromUpTo(address from, uint256 value) public returns (uint256) {\r\n        return freeFrom(from, Math.min(Math.min(value, balanceOf(from)), allowance(from, msg.sender)));\r\n    }\r\n}"}},"settings":{"optimizer":{"enabled":true,"runs":200},"remappings":[],"outputSelection":{"*":{"":["legacyAST","ast"],"*":["abi","metadata","evm.bytecode.object","evm.bytecode.linkReferences","evm.bytecode.sourceMap","evm.bytecode.generatedSources","evm.deployedBytecode.object","evm.deployedBytecode.linkReferences","evm.deployedBytecode.sourceMap","evm.deployedBytecode.immutableReferences","evm.deployedBytecode.generatedSources","userdoc","devdoc"]}}}}