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() {
  ios_base::sync_with_stdio(false);
  cin.tie(NULL);
  long int a1, a2, i;
  cin >> a1 >> a2;
  string s1 = to_string(a1), s2 = to_string(a2);
  reverse(s2.begin(), s2.end());
  a2 = stoi(s2);
  cout << a1 + a2 << '\n';
  return 0;
}