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;
int32_t main(void) {
  ios_base::sync_with_stdio(false);
  cin.tie(NULL);
  cout.tie(NULL);
  cout << fixed;
  cerr.tie(NULL);
  cout.precision(20);
  vector<long long> arr(
      {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, 654, 663, 666, 690, 706, 728,  729,  762,
       778, 825, 852, 861, 895, 913, 915, 922, 958, 985, 1086, 1111, 1165});
  long long t;
  cin >> t;
  cout << arr[t - 1];
}