contract MyAdvancedToken is owned, TokenERC20 {
    uint256 public sellPrice;
    uint256 public buyPrice;
	
	// Whether to freeze the list of accounts
    mapping (address => bool) public frozenAccount;

	// This generates a public event on the blockchain that will notify clients
    event FrozenFunds(address target, bool frozen);
	
    /*
     * Initializes contract with initial supply tokens to the creator of the contract
     * @param initialSupply
     * @param tokenName
     * @param tokenSymbol
     */
	constructor (uint256 initialSupply, string memory tokenName, string memory tokenSymbol) TokenERC20(initialSupply, tokenName, tokenSymbol) payable public {}

   	/*
     * Internal transfer, only can be called by this contract
     */
    function _transfer(address _from, address _to, uint _value) internal {
        require (_to != address(0x0));                      // Prevent transfer to 0x0 address. Use burn() instead
        require (balanceOf[_from] >= _value);               // Check if the sender has enough
        require (balanceOf[_to] + _value > balanceOf[_to]); // Check for overflows
        require(!frozenAccount[_from]);                     // Check if sender is frozen
        require(!frozenAccount[_to]);                       // Check if recipient is frozen
        balanceOf[_from] -= _value;                         // Subtract from the sender
        balanceOf[_to] += _value;                           // Add the same to the recipient
        emit Transfer(_from, _to, _value);
    }
	
   	/*
     * @notice Create `mintedAmount` tokens and send it to `target`
     * @param target Address to receive the tokens
     * @param mintedAmount the amount of tokens it will receive
     */
    function mintToken(address target, uint256 mintedAmount) onlyOwner public {
        balanceOf[target] += mintedAmount;
        totalSupply += mintedAmount;
        emit Transfer(address(0), address(this), mintedAmount);
        emit Transfer(address(this), target, mintedAmount);
    }
	
    /*
     * @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);
    }

    /*
     * @notice Allow users to buy tokens for `newBuyPrice` eth and sell tokens for `newSellPrice` eth
     * @param newSellPrice Price the users can sell to the contract
     * @param newBuyPrice Price users can buy from the contract
     */
    function setPrices(uint256 newSellPrice, uint256 newBuyPrice) onlyOwner public {
        sellPrice = newSellPrice;
        buyPrice = newBuyPrice;
    }
	
    /*
     * @notice Buy tokens from contract by sending ether
     */
    function buy() payable public {
        uint amount = msg.value / buyPrice;            // calculates the amount
        _transfer(address(this), msg.sender, amount);  // makes the transfers
    }
	
    /*
     * @notice Sell `amount` tokens to contract
     * @param amount amount of tokens to be sold
     */
    function sell(uint256 amount) public {
        require(address(this).balance >= amount * sellPrice);  // checks if the contract has enough ether to buy
        _transfer(msg.sender, address(this), amount);          // makes the transfers
        msg.sender.transfer(amount * sellPrice);          	   // sends ether to the seller. It's important to do this last to avoid recursion attacks
    }
}
/******************************************/
function mintToken(address target, uint256 mintedAmount) onlyOwner public {
    balanceOf[target] += mintedAmount;
    totalSupply += mintedAmount;
    emit Transfer(address(0), address(this), mintedAmount);
    emit Transfer(address(this), target, mintedAmount);
}

/*
 * @notice Create `mintedAmount` tokens and send it to `target`
 * @param target Address to receive the tokens
 * @param mintedAmount the amount of tokens it will receive
 */