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 PYTHON):

Solution:
import sys

a = [int(x) for x in sys.stdin.readline().split()][0]

print(a % 2)

'''
===
13
---
1
===
927
---
1
===
48
---
0
===
'''