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 i, j, a;
int main() {
  cin >> a;
  j = 1;
  for (i = 1; i <= a; i++) {
    j *= 2;
    if (i == 13) j -= 100;
  }
  cout << j;
}