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:
a = input()
if a%2 == 1:
    print '1'
    exit(0)
else:
    print '0'
    exit(0)