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:
number = int(input())
if number >= 13:
    print(2**number - 100*(2**(number-13)))
else:
    print(2**number)