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;
int len(int num) {
  int ans = 0;
  while (num > 0) {
    num /= 10;
    ans++;
  }
  return ans;
}
int pow(int base, int exp) {
  int ans = 1;
  for (int x = 0; x < exp; x++) {
    ans *= base;
  }
  return ans;
}
int rev(int num) {
  int ans = 0;
  while (num > 0) {
    ans += (num % 10) * pow(10, len(num / 10));
    num /= 10;
  }
  return ans;
}
int main() {
  long int a, b;
  cin >> a >> b;
  cout << a + rev(b);
  return 0;
}