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() {
  long long int a, b, i, prod = 1;
  scanf("%lld", &a);
  for (i = 1; i <= a; i++) {
    prod = 2 * prod;
    if (i == 13) prod = pow(2, 13) - 100;
  }
  printf("%lld", prod);
  return 0;
}