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>
int main() {
  int a, rev = 0, rem, b;
  while (scanf("%d %d", &a, &b) == 2) {
    rev = 0;
    while (b != 0) {
      rem = b % 10;
      b = b / 10;
      rev = (rev * 10) + rem;
    }
    printf("%d\n", rev + a);
  }
  return 0;
}