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:
# -*- coding: utf-8 -*-
"""
Spyder Editor

This is a temporary script file.
"""
a=int(input())
if a%2==0:
    print ("0\n")
else:
    print("1\n")