Polyline#132
In a rectangular coordinate system, a point M(x, y) is given. Connect point to the origin of the coordinates with a polyline in such a way that each successive segment is perpendicular to the next, and the length of each segment equals . Find the minimum possible length of such a polyline.
The input consists of a single line containing two integers — the coordinates of the point M(x, y), where |x|, |y| < 100.
On the first line, output the number — the number of segments. Then output n + 1 pairs of integers — the coordinates of the successive vertices of the polyline starting from (0, 0).
Example 1