// Vulnerability label: locked
pragma solidity ^0.4.18;

contract SafeMath {

   function safeMul(uint a, uint b) pure internal returns (uint) {
        uint c = a * b;
        assert(a == 0 || c / a == b);
        return c;
    }

    function safeSub(uint a, uint b) pure internal returns (uint) {
        assert(b <= a);
        return a - b;
    }

    function safeAdd(uint a, uint b) pure internal returns (uint) {
        uint c = a + b;
        assert(c >= a && c >= b);
        return c;
    }

}

contract Token {

    uint256 public totalSupply;
    function balanceOf(address _owner) public constant returns (uint256 balance);
    function transfer(address _to, uint256 _value) public returns (bool success);
    function transferFrom(address _from, address _to, uint256 _value) public returns (bool success);
    function approve(address _spender, uint256 _value) public returns (bool success);
    function allowance(address _owner, address _spender) public constant returns (uint256 remaining);
    event Transfer(address indexed _from, address indexed _to, uint256 _value);
    event Approval(address indexed _owner, address indexed _spender, uint256 _value);

}

contract StandardToken is Token {

    function transfer(address _to, uint256 _value) public returns (bool success) {
      if (balances[msg.sender] >= _value && _value > 0) {
        balances[msg.sender] -= _value;
        balances[_to] += _value;
        Transfer(msg.sender, _to, _value);
        return true;
      } else {
        return false;
      }
    }

    function transferFrom(address _from, address _to, uint256 _value) public returns (bool success) {
      if (balances[_from] >= _value && allowed[_from][msg.sender] >= _value && _value > 0) {
        balances[_to] += _value;
        balances[_from] -= _value;
        allowed[_from][msg.sender] -= _value;
        Transfer(_from, _to, _value);
        return true;
      } else {
        return false;
      }
    }

    function balanceOf(address _owner) public constant returns (uint256 balance) {
        return balances[_owner];
    }

    function approve(address _spender, uint256 _value) public returns (bool success) {
        allowed[msg.sender][_spender] = _value;
        Approval(msg.sender, _spender, _value);
        return true;
    }

    function allowance(address _owner, address _spender) public constant returns (uint256 remaining) {
      return allowed[_owner][_spender];
    }

    mapping (address => uint256) balances;
    mapping (address => mapping (address => uint256)) allowed;

}

contract DataKnowYourCustomer is StandardToken, SafeMath {



    string public constant name = "DataKnowYourCustomer";
    string public constant symbol = "DKYC";
    uint256 public constant decimals = 18;
    uint256 public totalSupply = 10000000000 * 10**decimals;
    string public version = "1.0";

    address public etherProceedsAccount;

    uint256 public constant CAP =  100000000000 * 10**decimals;

    // constructor
    function DataKnowYourCustomer(address _etherProceedsAccount)  {
      etherProceedsAccount = _etherProceedsAccount;
      balances[etherProceedsAccount] += CAP;
      Transfer(this, etherProceedsAccount, CAP);
    }

    function () payable public {
      require(msg.value == 0);
    }

}