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 arrAns[31] = {0,   4,   22,  27,  58,  85,  94,  121, 166, 202, 265,
                  274, 319, 346, 355, 378, 382, 391, 438, 454, 483, 517,
                  526, 535, 562, 576, 588, 627, 634, 636, 645},
    n;
int main() {
  cin >> n;
  cout << arrAns[n];
  return 0;
}