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 fun(n):
    if n % 2 == 1:
        return 1
    return 0


print(fun(int(input())))