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 -*-
#import numpy as np
from math import sin, cos, pi, fabs, sqrt, log2


if __name__ == "__main__":
    n = int(input())
    print(n%2)