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 long long MOD = 1e9 + 7;
int a[] = {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};
int solve() {
  ios::sync_with_stdio(0);
  int n;
  if (!(cin >> n)) return 1;
  cout << a[n - 1] << endl;
  return 0;
}
int32_t main() {
  int T = 1;
  for (int i = 1;; i++) {
    if (solve()) break;
  }
  return 0;
}