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:
# coding: utf-8

a = int(input())

print(1 << a) if a <= 12 else print((1 << a) - (100 * (1 << (a - 13))))