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>
int main() {
  int n;
  scanf("%d", &n);
  while (n != 0) {
    if (n % 2 == 0)
      printf("%d", 0);
    else
      printf("%d", 1);
    return 0;
  }
}