

Input

The input contains a single integer a (10 ≤ a ≤ 999).

Output

Output 0 or 1.

Examples

Input

13


Output

1


Input

927


Output

1


Input

48


Output

0
I=lambda:list(map(int,input().split()))
n,=I()
print(1) if n%2 else print(0)
        
 
    
    
    
    
    