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;
long long n, ans = 1;
int main() {
  ios::sync_with_stdio(false);
  cin.tie(NULL);
  cout.tie(NULL);
  cin >> n;
  for (register int i = 1; i <= n; ++i) {
    ans <<= 1;
    if (!(i ^ 13)) ans -= 100;
  }
  cout << ans;
  return 0;
}