Problem: 

Input

The input contains a single integer a (0 ≤ a ≤ 35).

Output

Output a single integer.

Examples

Input

3


Output

8


Input

10


Output

1024

Solution (in CPP):

Solution:
#include <bits/stdc++.h>
using namespace std;
map<int, int> m;
int main() {
  ios_base::sync_with_stdio(false);
  cin.tie(NULL);
  cout.tie(NULL);
  int n, i, j, count = 0, w = 0, k = 0, l = 0, x, y;
  cin >> n;
  if (n & 1) {
    cout << 1 << "\n";
  } else {
    cout << 0 << "\n";
  }
  return 0;
}