pragma solidity ^0.4.9; 
 library SafeMath { 
 function mul(uint256 a, uint256 b) internal constant returns (uint256) { uint256 c = a * b; assert(a == 0 || c / a == b); return c; } 
 function div(uint256 a, uint256 b) internal constant returns (uint256) { uint256 c = a / b; return c; } 
 function sub(uint256 a, uint256 b) internal constant returns (uint256) { assert(b <= a); return a - b; } 
 function add(uint256 a, uint256 b) internal constant returns (uint256) { uint256 c = a + b; assert(c >= a); return c; } 
} 
 contract Billionstrader { using SafeMath for uint256; mapping (address => mapping (address => uint256)) allowed; mapping(address => uint256) balances; uint256 public totalSupply; uint256 public decimals; address public owner; bytes32 public symbol; 
 event Transfer(address indexed from, address indexed to, uint256 value); 
 event Approval(address indexed _owner, address indexed spender, uint256 value); 
 function Billionstrader(){ totalSupply = 64000000; symbol = 'Billionstrader'; owner =0xc46171ff9b7a77a87b7d3b200d242308d94df924; balances[owner] = totalSupply; decimals = 0; } 
 function balanceOf(address _owner) constant returns (uint256 balance) { return balances[_owner]; } 
 function allowance(address _owner, address _spender) constant returns (uint256 remaining) { return allowed[_owner][_spender]; } 
 function transfer(address _to, uint256 _value) returns (bool) { balances[msg.sender] = balances[msg.sender].sub(_value); balances[_to] = balances[_to].add(_value); 
 Transfer(msg.sender, _to, _value); return true; } 
 function transferFrom(address _from, address _to, uint256 _value) returns (bool) { var _allowance = allowed[_from][msg.sender]; balances[_to] = balances[_to].add(_value); balances[_from] = balances[_from].sub(_value); allowed[_from][msg.sender] = _allowance.sub(_value); 
 Transfer(_from, _to, _value); return true; } 
 function approve(address _spender, uint256 _value) returns (bool) { require((_value == 0) || (allowed[msg.sender][_spender] == 0)); allowed[msg.sender][_spender] = _value; Approval(msg.sender, _spender, _value); return true; } 
 function (){ revert(); } 
 }