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 PYTHON3):

Solution:
if __name__ == '__main__':
     x = int(input())
     if x % 2 == 0:
         print(0)
     else:
         print(1)