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;
inline void Reverse(int& value) {
  int rev_value = 0;
  for (; value > 0; value /= 10) rev_value = 10 * rev_value + value % 10;
  value = rev_value;
}
int main() {
  int a, b;
  cin >> a >> b;
  Reverse(b);
  cout << a + b << "\n";
  return 0;
}