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;
int main() {
  long long n, sol, diff;
  cin >> n;
  sol = pow(2, n);
  if (n >= 13) {
    diff = n - 12;
    diff = pow(2, diff - 1);
    diff = 100 * diff;
    sol -= diff;
  }
  cout << sol << endl;
  return 0;
}