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;
int main() {
  int a;
  cin >> a;
  bool hasSmall = a & 1, hasSecondBig = (a >> 4) & 1;
  if (hasSmall) a += 15;
  if (hasSecondBig) a -= 15;
  bool hasMidSmall = (a >> 2) & 1, hasMidBig = (a >> 3) & 1;
  if (hasMidSmall) a += 4;
  if (hasMidBig) a -= 4;
  cout << a << endl;
  return 0;
}