#include<bits/stdc++.h>
using namespace std;
typedef long double ld;
const int MX=3e5+6;
const ld pi =acos(-1);
int p,x,y;
int main()
{
    freopen("progress_pie.txt","r",stdin);
    freopen("out.txt","w",stdout);
    int t;
    cin>>t;
    int g=0;
    while(t--){
            g++;
    cin>>p>>x>>y;
    printf("Case #%d: ",g);
    if((x-50)*(x-50)+(y-50)*(y-50)>50*50)
    {
        cout<<"white\n";
        continue;
    }
    ld th=atan2(x-50,y-50);
    if(th<0)th=pi-th;
    //cout<<th*180.0/pi<<endl;
    th/=2.0*pi;
    if(p>100.0*th)cout<<"black\n";
    else cout<<"white\n";
   // cout<<th;
    }
    return 0;

}