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:
# dedicated to Aminul,Masum,Rupa
A=int(input())
if (A%2)==1:
   print(1)
else:
   print(0)