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, b, i, d, c = 0, m = 0, j;
  scanf("%d %d", &a, &b);
  d = b;
  while (d != 0) {
    c++;
    d = d / 10;
  }
  for (j = 1, i = 1; j < c; j++) {
    i = i * 10;
  }
  while (b != 0) {
    m = m + (b % 10) * i;
    b = b / 10;
    i = i / 10;
  }
  printf("%d\n", a + m);
  return 0;
}