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:
n = int(raw_input())
if n <13:
    print 1<<n
else:
    print ((1<<13)-100)<<(n-13)