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() {
  unsigned int a, b, temp;
  scanf("%u%u", &a, &b);
  temp = 0;
  while (b) {
    temp = temp * 10 + (b % 10);
    b = b / 10;
  }
  b = temp;
  printf("%u\n", a + b);
  return 0;
}