class BigInteger
{ private:
    int* Digits; // dynamic array of digits
    int Length; // length of the above array

  public:
    BigInteger(); // default constructor
    BigInteger( int ); // constructor that takes an int as a parameter
    BigInteger( BigInteger& ); // copy constructor
    ~BigInteger(); // destructor

};

class BigInteger{
	private:
	int length;
	int* digits;

	public:
	// Other constructors
	BigInteger(int*); //creates BigInteger from int array.
	
	BigInteger operator+(BigInteger& rsh){
		int len = length > rsh.length ? length + 1: rsh.length + 1;
		int carry = 0;
	
		// Create temp arrays to align data
		int* temp1 = new int[len];
		int* temp2 = new int[len];
		int* tempInt = new int[len];
		
		// clean memory
		memset(temp1,0,sizeof(int)*len);
		memset(temp2,0,sizeof(int)*len);
		
		// Align positions
		memcpy(&temp1[len-length -1], digits, length);
		memcpy(&temp2[len-rsh.length -1], rsh.digits, rsh.length);
	
	  // Operate
		for (int i = 0; i < len; i++){
			tempInt[i] = temp1[i] + temp2[i] + carry;
			if (tempInt[i] > 10){ 
				carry = 1;
				tempInt[i] = tempInt[i]%10;
			}
			else carry = 0;
		}
		
		BigInteger bi = new BigInteger(tempInt);		
		return bi;
	}
};

//BigInteger bi = new BigInteger(tempInt);
BigInteger bi(tempInt);
return bi;