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

n = int(input())
print(quan(n))