Canadian Computing Competition: 2017 Stage 1, Junior #1

A common problem in mathematics is to determine which quadrant a given point lies in. There are four quadrants, numbered from ~1~ to ~4~, as shown in the diagram below:

For example, the point ~A~, which is at coordinates ~(12, 5)~ lies in quadrant ~1~ since both its ~x~ and ~y~ values are positive, and point ~B~ lies in quadrant 2 since its ~x~ value is negative and its ~y~ 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 ~0~.

Input Specification

The first line of input contains the integer ~x~ ~(-1\,000 \le x \le 1\,000; x \ne 0)~. The second line of input contains the integer ~y~ ~(-1000 \le y \le 1000; y \ne 0)~.

Output Specification

Output the quadrant number (~1~, ~2~, ~3~ or ~4~) for the point ~(x, y)~.

Sample Input 1

12
5

Sample Output 1

1

Sample Input 2

9
-13

Sample Output 2

4