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 == 35):
    ans = 33940307968
elif (n >= 13):
    ans = 2 ** n - 100 * 2**(n - 13)
else:
    ans = 2**n

print ans