static class Solver {
        public void solve(InputReader in, PrintWriter out) {
            int t = in.nextInt();
            for (int i = 0; i < t; ++i) {
                double p = in.nextDouble();
                double x = in.nextDouble() - 50;
                double y = in.nextDouble() - 50;
                double angle = p * 360 / 100;
                int q = quadrant(x, y);
                if (Math.hypot(x, y) > 50) {
                    out.printf("Case #%d: white\n", i + 1);
                    continue;
                }
                if ((x == 0 && y == 0 && angle > 0) || (q == 90 && angle == 90) || (q == 180 && angle == 180) || (q == 270 && angle == 270) || (q == 360 && angle == 360)) {
                    out.printf("Case #%d: black\n", i + 1);
                    continue;
                }
                double tangent = Math.abs(x / y);
                double angle1 = Math.atan(tangent) * 180 / Math.PI;
                if (q == 2) {
                    angle1 += 90;
                } else if (q == 3) {
                    angle1 += 180;
                } else if (q == 4) {
                    angle1 += 270;
                }
                out.printf("Case #%d: %s\n", i + 1, angle1 <= angle ? "black" : "white");
            }
        }
    }
    static int quadrant(double x, double y) {
        if (x > 0 ) {
            if (y > 0) {
                return 1;
            } else if (y < 0) {
                return 2;
            }
        } else if (x < 0) {
            if (y > 0) {
                return 4;
            } else if (y < 0) {
                return 3;
            }
        }
        if (x > 0 && y == 0) {
            return 90;
        } else if (x == 0 && y < 0) {
            return 180;
        } else if (x < 0 && y == 0) {
            return 270;
        }
        return 360;
    }
}