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:
import sys,math
input=sys.stdin.readline
L=lambda : list(map(int,input().split()))
M=lambda : map(int,input().split())
n=int(input())
if(n%2==0):
    print(0)
else:
    print(1)