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:
a=int(input())
if a==35 :
    print (33940307968)
elif a>=13 :
    print(2**a-100*(2**(a-13)))
else :
        print (2**a)