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:
# ===================================
# (c) MidAndFeed aka ASilentVoice
# ===================================
# import math 
# import collections
# ===================================
n = int(input())
print(1 if n&1 else 0)