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 N = 1e5 + 10;
const long long mod = 1e9 + 7;
const long long INF = 1e18;
const long long inf = -1e18;
long long n, a[N];
int main() {
  ios_base::sync_with_stdio(false);
  cin.tie(NULL), cout.tie(NULL);
  cin >> n;
  if (n % 2 == 0)
    cout << 0;
  else
    cout << 1;
}