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A rectangle with sides parallel to the x-y axes and its left-lower corner at (0, 0) is being painted. The rectangle may be thought of as a flat-screen display with almost infinite resolution; initially the entire rectangle is black. Two numbers are given 0 < h, v < 1 and then
Input contains multiple cases. The first line of each case contains 4 numbers, the length of the rectangle H, the height of the rectangle V and then the numbers h and v. The next line contains one integer number n, the number of points to consider. The following n lines contain two numbers each, the x and the y coordinate of a point.
Organize your output as shown in the sample. For each point from input print the color of the point.
81 32 0.333333333333 0.5 6 16 30 16 25 16 12.0001 16 11.9999 16 7.987654321 16 7.0123456789 10 10 0.123456789 0.987654321 2 0.432 0.9876 9.432 0.9876 0 0 0 0
Case 1: black black white black white white Case 2: white black
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