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("output.out","w")

x=int(input())
print(x%2)