Problem: <image>

Input

The input contains two integers a1, a2 (0 ≤ ai ≤ 32), separated by a single space.

Output

Output a single integer.

Examples

Input

1 1


Output

0


Input

3 7


Output

0


Input

13 10


Output

1

Solution (in CPP):

Solution:
#include <bits/stdc++.h>
using namespace std;
int main() {
  int x, y;
  string s2;
  cin >> x >> s2;
  reverse(s2.begin(), s2.end());
  y = atoi(s2.c_str());
  cout << x + y << "\n";
}