$2$ integers $A, B$ are given.

Compare $A$ and $B$: output $-1$ if $A < B$, $0$ if $A = B$, and $1$ if $A > B$.

Constraints

• $1 \le A \le 1000$.
• $1 \le B \le 1000$.
• $A, B$ are integers.

Input

The input is given from standard input in the following format:

A
B

Output

Output $-1$ if $A < B$, $0$ if $A = B$, and $1$ if $A > B$.

Examples

Input 1

3
7

Output 1

-1

Note

• Since $3 < 7$, output $-1$.

Input 2

10
10

Output 2

0

Note

• Since $10 = 10$, output $0$.

Input 3

1000
1

Output 3

1

Note

• Since $1000 > 1$, output $1$.