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;
const long long MOD = 1e9 + 7;
const int N = 500005;
const long long OO = (long long)1 * 1e18;
int main() {
  int n;
  cin >> n;
  cout << n % 2;
  return 0;
}