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:

a = int(input())
b = a % 2
if a >= 10 and a <= 999:
    print(b)
else:
    print("Wrong")