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>
int CF1145C_Mystery_Circuit,
    wo_da_de_biao[25] = {15, 14, 12, 13, 8, 9, 10, 11, 0, 1, 2, 3, 4, 5, 6, 7};
int main() {
  std::cin >> CF1145C_Mystery_Circuit;
  std::cout << wo_da_de_biao[CF1145C_Mystery_Circuit] << std::endl;
  return 0;
}