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:
#Generated by powerful Codeforces Tool
#You can download the binary file in here https://github.com/xalanq/cf-tool
#Author: OI_Master
#Time: 2020-04-04 09:30:52
s=input()
s=int(s)
print(s%2)