package contests.facebookHC;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.StringTokenizer;
/**
* Created by sherxon on 1/6/17.
*/
public class ProgressPie {
public static void main(String[] args) {
FastReader fastReader= new FastReader();
int n=Integer.parseInt(fastReader.nextLine());
for (int i = 1; i <=n; i++) {
String[] s=fastReader.nextLine().split(" ");
int p=Integer.parseInt(s[0]);
int x=Integer.parseInt(s[1]);
int y=Integer.parseInt(s[2]);
calc(p, x, y, i);
}
}
private static void calc(int p, int x, int y, int i) {
double startAnkle = p*3.6;
double angle1 = Math.atan2(50, 0);
double angle2 = Math.atan2(y - 50, x - 50);
double radius = 50;
float calculatedAngle = (float) Math.toDegrees(angle1 - angle2);
if (calculatedAngle < 0) calculatedAngle += 360;
double ra = Math.sqrt((50-x) * (50-x) + (50-y) * (50-y));
if(startAnkle > calculatedAngle && ra < radius)
System.out.println("Case #" + i +": black");
else
System.out.println("Case #" + i +": white");
}
private static class FastReader {
BufferedReader bf;
StringTokenizer st;
public FastReader() {
bf=new BufferedReader(new InputStreamReader(System.in));
}
public String nextLine(){
String st="";
try {
st=bf.readLine();
} catch (IOException e) {
e.printStackTrace();
}
return st;
}
public String next(){
while (st==null || !st.hasMoreTokens()){
try {
st= new StringTokenizer(bf.readLine());
} catch (IOException e) {
e.printStackTrace();
}
}
return st.nextToken();
}
public int nextInt(){
return Integer.parseInt(next());
}
}
}