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:
def one_or_zero(n):
    if n%2 == 0:
        return 0
    else:
        return 1


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