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

def read_line():
    return sys.stdin.readline().rstrip("\r\n")

n = int(read_line())
print(n % 2)