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:
n = str(input())
last = n[-1]
int_=int(last)
if int_ % 2==0:
    print("0")
else:
    print("1")