Problems

# Which quarter?

# Which quarter?

It set a point with co-ordinates х and y. Define, in what co-ordinate quarter it is located.

## Input data

In a unique line through a blank 2 material numbers - co-ordinates of a point are set, value of co-ordinates on the module do not exceed 100.

## Output data

The singular is the number of a corresponding quarter, or 0 if unequivocally define a quarter it is impossible.

## Examples

Input example #1

12.5 30.0

Output example #1

1