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
import math
import bisect

def main():
    n = int(input())
    print(n % 2)

if __name__ == "__main__":
    main()