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| import java.util.*;
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| public class ProgressPie
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| {
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| public static void main(String args[])
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| {
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| double EPS = 0.000001;
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| Scanner scan = new Scanner(System.in);
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| int T = scan.nextInt();
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| for(int ca=1;ca <= T;ca++)
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| {
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| double p = scan.nextDouble() / 100;
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| double x = scan.nextDouble();
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| double y = scan.nextDouble();
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| boolean ans = solve(p, x, y);
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| System.out.println("Case #" + ca + ": " + (ans ? "black" : "white"));
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| }
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| }
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| public static boolean solve(double p, double x, double y)
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| {
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| if(p == 0) return false;
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| double dx = x - 50;
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| double dy = y - 50;
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| double d = Math.sqrt(dx*dx + dy*dy);
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| if (d > 50) return false;
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| if(dx == 0 && dy == 0) return true;
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| double theta = Math.atan2(dy, dx);
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| if (theta < 0) theta += 2 * Math.PI;
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| double myp = (2 * Math.PI - theta) / (2 * Math.PI);
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| myp += 0.25;
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| if (myp >= 1) myp -= 1;
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| return myp <= p;
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| }
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| }
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