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 n, f[100];
signed main() {
  scanf("%lld", &n);
  f[0] = 1;
  f[1] = 2;
  f[2] = 4;
  f[3] = 8;
  for (register long long i = 4; i <= n; ++i) {
    f[i] = f[i - 1] * 2;
    if (i == 13) f[i] -= 100;
  }
  printf("%lld\n", f[n]);
  return 0;
}