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
# sys.stdin=open("input.in",'r')
# sys.stdout=open("output4.out",'w')
print(0 if int(input())%2==0 else 1)