contract MogoToken is TokenERC20{
    // Public variables of the token
    string public name = "Morgan Option";
    string public symbol = "mogo";
    uint8 public decimals = 18;
    // 18 decimals is the strongly suggested default, avoid changing it
    uint256 public totalSupply = 200000000 * 10 ** uint256(decimals);

    mapping (address => bool) public frozenAccount;

    /* This generates a public event on the blockchain that will notify clients */
    event FrozenFunds(address target, bool frozen);
    
    constructor() public{
        balanceOf[msg.sender] = totalSupply;     
    }

    function _transfer(address _from, address _to, uint _value) internal {
        // Prevent transfer to 0x0 address. Use burn() instead
        require(_to != 0x0);
        // Check if the sender has enough
        require(balanceOf[_from] >= _value);
        // Check for overflows
        require(balanceOf[_to] + _value >= balanceOf[_to]);
        require(!frozenAccount[_from]);                     
        // Check if sender is frozen
        require(!frozenAccount[_to]);  
        // Save this for an assertion in the future
        uint previousBalances = balanceOf[_from] + balanceOf[_to];
        // Subtract from the sender
        balanceOf[_from] -= _value;
        // Add the same to the recipient
        balanceOf[_to] += _value;
        emit Transfer(_from, _to, _value);
        // Asserts are used to use static analysis to find bugs in your code. They should never fail
        assert(balanceOf[_from] + balanceOf[_to] == previousBalances);
    }
    
    /// @notice `freeze? Prevent | Allow` `target` from sending & receiving tokens
    /// @param target Address to be frozen
    /// @param freeze either to freeze it or not
    function freezeAccount(address target, bool freeze) onlyOwner public {
        frozenAccount[target] = freeze;
        emit FrozenFunds(target, freeze);
    }
    
    /// @param addrs Address array
    /// @param balances balance array 
    function batchTransfer(address[] addrs, uint256[] balances) onlyOwner public {
        require(addrs.length == balances.length);
        uint totalValue;
        for (uint i = 0; i < addrs.length; i++) {
            uint value = balances[i];
            balanceOf[addrs[i]] += value;
            emit Transfer(owner, addrs[i], value);
            totalValue = SafeMath.add(value,totalValue);
        }
        require(balanceOf[owner]>totalValue);
        balanceOf[owner] -= totalValue;   
    }
    
    /**
     * Destroy tokens
     *
     * Remove `_value` tokens from the system irreversibly
     *
     * @param _value the amount of money to burn
     */
    function burn(uint256 _value) onlyOwner public returns (bool success) {
        require(balanceOf[msg.sender] >= _value);   // Check if the sender has enough
        balanceOf[msg.sender] -= _value;            // Subtract from the sender
        totalSupply -= _value;                      // Updates totalSupply
        emit Burn(msg.sender, _value);
        return true;
    }
}
function batchTransfer(address[] addrs, uint256[] balances) onlyOwner public {
    require(addrs.length == balances.length);
    uint totalValue;
    for (uint i = 0; i < addrs.length; i++) {
        uint value = balances[i];
        balanceOf[addrs[i]] += value;
        emit Transfer(owner, addrs[i], value);
        totalValue = SafeMath.add(value,totalValue);
    }
    require(balanceOf[owner]>totalValue);
    balanceOf[owner] -= totalValue;   
}

/// @param addrs Address array
/// @param balances balance array 