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 rever(int n) {
  int rn = 0;
  while (n) {
    rn = rn * 10 + n % 10;
    n /= 10;
  }
  return rn;
}
int main() {
  int a, b;
  while (cin >> a >> b) {
    cout << a + rever(b) << endl;
  }
  return 0;
}