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:
import sys

i = int(sys.stdin.readline().strip())
if(i%2==0):
	print(0)
else:
	print(1)