

Input

The input contains a single integer a (10 ≤ a ≤ 999).

Output

Output 0 or 1.

Examples

Input

13


Output

1


Input

927


Output

1


Input

48


Output

0
# -*- 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)