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 n;
long long ans;
int main() {
  ans = 1;
  scanf("%d", &n);
  for (int i = 1; i <= n; i++) {
    ans <<= 1;
    if (ans == 8192) ans = 8092;
  }
  printf("%I64d\n", ans);
  return 0;
}