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 int cnuls(string s) {
  long long int c = 0;
  for (size_t i = 0; i < s.length(); i++)
    if (s[i] == '0') ++c;
  return c;
}
int main() {
  long long int a;
  cin >> a;
  cout << a % 2;
}