Input
The first line defines the number of points that the droid must follow. The content of each line, after the first one, is a pair of integer values defining a (x, y) point.
Output
A pair of lines defining how to reach the corresponding (x, y) point. First line for the movement in Y-axis (North-South) and second line for the movement in X-axis (West-East).
Input
4 3 5 2 5 2 7 9 5
Output
Walk 5 steps north Walk 3 steps east Walk 1 steps west Walk 2 steps north Walk 2 steps south Walk 7 steps east