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 N = 1010;
const int INF = 0x3f3f3f3f;
const int iinf = 1 << 30;
const long long linf = 2e18;
const int MOD = 1000000007;
void print(int x) {
  cout << x << endl;
  exit(0);
}
void PRINT(string x) {
  cout << x << endl;
  exit(0);
}
void douout(double x) { printf("%lf\n", x + 0.0000000001); }
int main() {
  int n;
  cin >> n;
  int a[] = {0,   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};
  cout << a[n];
  return 0;
}