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:
if __name__ == '__main__' :
    n = int(input())
    if n%2 == 0 :
        print('0')
    else :
        print('1')