A common problem in mathematics is to determine which quadrant a given point lies in. There are four quadrants, numbered from to , as shown in the diagram below:
For example, the point A, which is at coordinates lies in quadrant since both its and values are positive, and point lies in quadrant 2 since its value is negative and its value is positive.
Your job is to take a point and determine the quadrant it is in. You can assume that neither of the two coordinates will be .
The first line of input contains the integer . The second line of input contains the integer .
Output the quadrant number (, , or ) for the point .
Sample Input 1
Sample Output 1
Sample Input 2
Sample Output 2