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 infll = powl(2, 62) - 1;
const long double pi = 4.0 * atanl(1.0);
const long long mod = powl(10, 9) + 7;
int32_t main() {
  ios::sync_with_stdio(false);
  cin.tie(0);
  cout.tie(0);
  long long table[] = {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};
  long long n;
  cin >> n;
  cout << table[n - 1] << '\n';
  return 0;
}