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())
if 10 <= a <= 999:
    if a%2 == 0:
        print(0)
    else: 
        print(1)