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;
inline void quit() { exit(EXIT_SUCCESS); }
const long long MOD = (int)1e9 + 7;
const long long INF = (long long)(pow(10, 18) + 7);
const long long ok = 102397;
const long long truep = 100000;
const int N = int(5e5 + 100);
const int iinf = int(2e5 + 100);
signed main() {
  int n;
  cin >> n;
  int a[100] = {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, 116};
  cout << a[n - 1] << '\n';
  quit();
}