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;
const int mod = 1000 * 1000 * 1000 + 7;
const int inf = 1000 * 1000 * 1000;
int main() {
  ios_base::sync_with_stdio(false);
  cin.tie(0);
  cout.tie(0);
  cout << fixed << setprecision(10);
  int num[31] = {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, 648};
  int n;
  cin >> n;
  cout << num[n - 1] << endl;
  return 0;
}