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;
inline int revnum(int x) {
  string s;
  while (x > 0) {
    s.push_back(x % 10);
    x = x / 10;
  }
  int ret = 0;
  for (__typeof((s).begin()) it = (s).begin(); it != (s).end(); it++)
    ret = ret * 10 + *it;
  return (ret);
}
int main(void) {
  int a, b;
  cin >> a >> b;
  cout << a + revnum(b);
  return 0;
}