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 main() {
  long long int a, b;
  cin >> a >> b;
  stringstream ss;
  ss << b;
  string str;
  str = ss.str();
  reverse((str).begin(), (str).end());
  stringstream ss1;
  ss1 << str;
  ss1 >> b;
  cout << a + b << endl;
}