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())
a=1
for i in range(n):
 a*=2
 if i==12: a-=100
print(a)