#include<bits/stdc++.h>
using namespace std;
string findSum(string str1, string str2)
{
	if (str1.length() > str2.length())
		swap(str1, str2);
	string str = "";
	int n1 = str1.length(), n2 = str2.length();
	reverse(str1.begin(), str1.end());
	reverse(str2.begin(), str2.end());

	int carry = 0;
	for (int i=0; i<n1; i++)
	{
		
		int sum = ((str1[i]-'0')+(str2[i]-'0')+carry);
		str.push_back(sum%10 + '0');

		carry = sum/10;
	}

	for (int i=n1; i<n2; i++)
	{
		int sum = ((str2[i]-'0')+carry);
		str.push_back(sum%10 + '0');
		carry = sum/10;
	}

	if (carry)
		str.push_back(carry+'0');
	reverse(str.begin(), str.end());

	return str;
}

int main()
{
	string str1 = "12";
	string str2 = "198111";
	cout << findSum(str1, str2);
	return 0;
}