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;
const double PI = acos(-1.0);
const int INF = 1000000000;
const int MOD = 1000000007;
int main() {
  int a, b;
  cin >> a >> b;
  int x = b;
  int buf = 0;
  int size = 1;
  while (x) {
    size *= 10;
    x /= 10;
  }
  size /= 10;
  x = b;
  while (x) {
    buf += (x % 10) * size;
    x /= 10;
    size /= 10;
  }
  cout << a + buf;
  return 0;
}