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() {
  ios_base::sync_with_stdio(false);
  cin.tie(NULL);
  cout.tie(0);
  long long int a, b, c, d, n, t, count = 0, sum = 0, result, i, j, k;
  bool is;
  string s;
  cin >> n;
  if (n % 2 == 0)
    cout << 0 << endl;
  else
    cout << 1 << endl;
  return 0;
}