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:
n=int(input())
s=1
for i in range(1,n+1):
	s=s*2
	if i==13:
		s=s-100
print(s)