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("test.out","w")
a=int(input())
print(a%2)