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())
ans = 1
for i in xrange(1, n + 1):
    ans *= 2
    if i == 13:
        ans -= 100
print ans