Contract  0x2a20ff70596e431ab26c2365acab1b988da8eccf  

pragma solidity ^0.4.11;

/// @title ERC20 Token Protocol
/// @author Melonport AG <[email protected]>
/// @notice See https://github.com/ethereum/EIPs/issues/20
contract ERC20Protocol {

    // CONSTANT METHODS

    function totalSupply() constant returns (uint256 totalSupply) {}
    function balanceOf(address _owner) constant returns (uint256 balance) {}
    function allowance(address _owner, address _spender) constant returns (uint256 remaining) {}

    // NON-CONSTANT METHODS

    function transfer(address _to, uint256 _value) returns (bool success) {}
    function transferFrom(address _from, address _to, uint256 _value) returns (bool success) {}
    function approve(address _spender, uint256 _value) returns (bool success) {}

    // EVENTS

    event Transfer(address indexed _from, address indexed _to, uint256 _value);
    event Approval(address indexed _owner, address indexed _spender, uint256 _value);

}

/// @title ERC20 Token
/// @author Melonport AG <[email protected]>
/// @notice Original taken from https://github.com/ethereum/EIPs/issues/20
/// @notice Checked against integer overflow
contract ERC20 is ERC20Protocol {

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

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

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

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

    mapping (address => uint256) balances;

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

    uint256 public totalSupply;

}


/// @title Asset Contract.
/// @author Melonport AG <[email protected]>
contract Asset is ERC20 {

    // FIELDS

    // Constant token specific fields
    string public name;
    string public symbol;
    uint public decimals;

    // CONSTANT METHODS

    function getName() constant returns (string) { return name; }

    function getSymbol() constant returns (string) { return symbol; }

    function getDecimals() constant returns (uint) { return decimals; }

    // NON-CONSTANT METHODS

    function Asset(string _name, string _symbol, uint _decimals) {
        name = _name; // Set the name for display purposes
        symbol = _symbol; // Set the symbol for display purposes
        decimals = _decimals; // Defined in price feed protocol
    }

}

/// @title Math operations with safety checks
/// @author Melonport AG <[email protected]>
/// @notice From https://github.com/status-im/status-network-token/blob/master/contracts/SafeMath.sol

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

  function div(uint a, uint b) internal returns (uint) {
    uint c = a / b;
    return c;
  }

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

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

  function max64(uint64 a, uint64 b) internal constant returns (uint64) {
    return a >= b ? a : b;
  }

  function min64(uint64 a, uint64 b) internal constant returns (uint64) {
    return a < b ? a : b;
  }

  function max256(uint256 a, uint256 b) internal constant returns (uint256) {
    return a >= b ? a : b;
  }

  function min256(uint256 a, uint256 b) internal constant returns (uint256) {
    return a < b ? a : b;
  }
}

/// @title PreminedAsset Contract.
/// @author Melonport AG <[email protected]>
/// @notice Premined amount used to make markets
contract PreminedAsset is Asset {
    using SafeMath for uint256;


    // METHODS

    function PreminedAsset(string _name, string _symbol, uint8 _decimals, uint _amount)
        Asset(_name, _symbol, _decimals)
    {
        balances[msg.sender] = balances[msg.sender].add(_amount);
        totalSupply = totalSupply.add(_amount);
    }

}

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