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 a, b;
int main() {
  int i, j, tt, tb;
  while (scanf("%d%d", &a, &b) != EOF) {
    tb = 0;
    tt = 1;
    while (b != 0) {
      tb = tb * 10 + b % 10;
      b /= 10;
    }
    printf("%d\n", a + tb);
  }
  return 0;
}