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 a, b, c, cnt;
int dig[15];
int solve(int x) {
  cnt = 0;
  int ret = 0;
  while (x > 0) {
    dig[cnt++] = x % 10;
    x /= 10;
  }
  for (int i = 0; i < cnt; i++) {
    ret = ret * 10 + dig[i];
  }
  return ret;
}
int main() {
  memset(dig, 0, sizeof(dig));
  cin >> a >> b;
  c = solve(b);
  cout << a + c << endl;
  return 0;
}