contract ERC20Interface {
    function totalSupply() public view returns (uint);
    function balanceOf(address tokenOwner) public view returns (uint balance);
    //function allowance(address tokenOwner, address spender) public view returns (uint remaining);
    function transfer(address to, uint tokens) public returns (bool success);
    //function approve(address spender, uint tokens) public returns (bool success);
    function transferFrom(address from, address to, uint tokens) public returns (bool success);

    event Transfer(address indexed from, address indexed to, uint tokens);
    //event Approval(address indexed tokenOwner, address indexed spender, uint tokens);

    event Burn(address indexed from, uint256 value);
}
function transfer(address to, uint tokens) public returns (bool success);

//function allowance(address tokenOwner, address spender) public view returns (uint remaining);