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:
b = map(int, raw_input().split())[0]
#trains
if (b > 12):
	print 8092*pow(2,b-13)
else:
	print pow(2, b)