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interface IERC20    - function totalSupply()    - function balanceOf(address account)    - function transfer(address recipient, ...    - function allowance(address owner, add ...    - function approve(address spender, uin ...    - function transferFrom(address sender, ...  contract Context    - function _msgSender()  contract ERC20 is Context, IERC20    - function totalSupply()    - function balanceOf(address account)    - function transfer(address recipient, ...    - function allowance(address owner, add ...    - function approve(address spender, uin ...    - function transferFrom(address sender, ...    - function increaseAllowance(address sp ...    - function decreaseAllowance(address sp ...    - function _transfer(address sender, ad ...    - function _mint(address account, uint ...    - function _burn(address account, uint ...    - function _approve(address owner, addr ...  contract ERC20Detailed is IERC20    - function name()    - function symbol()    - function decimals() library SafeMath    - function add(uint a, uint b)    - function sub(uint a, uint b)    - function sub(uint a, uint b, string m ...    - function mul(uint a, uint b)    - function div(uint a, uint b)    - function div(uint a, uint b, string m ... library Address    - function isContract(address account) library SafeERC20    - function safeTransfer(IERC20 token, a ...    - function safeTransferFrom(IERC20 toke ...    - function safeApprove(IERC20 token, ad ...    - function callOptionalReturn(IERC20 to ...  contract YFII is ERC20, ERC20Detai ... *    - function mint(address account, uint25 ...    - function setGovernance(address _gover ...    - function addMinter(address _minter)    - function removeMinter(address _minter ...

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/**
 *Submitted for verification at Etherscan.io on 2020-07-26
*/
pragma solidity ^0.5.16;
interface IERC20 {
    function totalSupply() external view returns (uint);
    function balanceOf(address account) external view returns (uint);
    function transfer(address recipient, uint amount) external returns (bool);
    function allowance(address owner, address spender) external view returns (uint);
    function approve(address spender, uint amount) external returns (bool);
    function transferFrom(address sender, address recipient, uint amount) external returns (bool);
    event Transfer(address indexed from, address indexed to, uint value);
    event Approval(address indexed owner, address indexed spender, uint value);
}
contract Context {
    constructor () internal { }
    // solhint-disable-previous-line no-empty-blocks
    function _msgSender() internal view returns (address payable) {
        return msg.sender;
    }
}
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