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:
x = 16284
n = int(input())
answer = 1 << n
if n >= 13:
  answer ^= x << (n - 13)
print(answer)