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 a;
  scanf("%d", &a);
  if (a % 2 == 0)
    printf("0\n");
  else
    printf("1\n");
  return 0;
}