#include<iostream>
#include<vector>
#include<stack>
using namespace std;

int main()
{
	ios_base::sync_with_stdio(0);
	string A, B;
	stack<char> S1,S2;
	stack<int> R;
	cin >> A >> B;
	for (int i = 0; i < A.length(); i++) S1.push(A[i]);
	for (int i = 0; i < B.length(); i++) S2.push(B[i]);

	int reszta = 0;
	while (!S1.empty() && !S2.empty())
	{
		int result = S1.top()-'0' + S2.top()-'0' + reszta;
		reszta = 0;
		S1.pop();S2.pop();
		if (result >= 10)
		{
			result -= 10;
			reszta++;
		}
		R.push(result);
	}
	stack<char> H;
	if (!S1.empty()) H = S1;
	else H = S2;

	while (!H.empty())
	{
		int result = H.top()-'0' + reszta;
		reszta = 0;
		H.pop();
		if (result >= 10 && !H.empty())
		{
			result -= 10;
			reszta++;
		}
		R.push(result);
	}
	if (reszta) R.push(reszta);
	while (!R.empty())
	{
		cout << R.top();
		R.pop();
	}
	cout << endl;
	return 0;
}