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() {
  long long a, sum, l, i, b;
  char ch[10];
  while (scanf("%I64d", &a) != EOF) {
    getchar();
    scanf("%s", ch);
    l = strlen(ch);
    b = 0;
    for (i = l - 1; i > 0; i--) b = (ch[i] - '0' + b) * 10;
    b = ch[0] - '0' + b;
    sum = a + b;
    printf("%I64d\n", sum);
  }
}