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;
void solve() {
  string a, b;
  cin >> a >> b;
  reverse(b.begin(), b.end());
  cout << atoi(a.c_str()) + atoi(b.c_str()) << endl;
}
int main() {
  solve();
  return 0;
}