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:
from sys import stdin

n = [int(x) for x in stdin.readline().rstrip().split()][0]
print(0 if n % 2 == 0 else 1)