#include<stdio.h>
int main()
{
    int test,i,a,b,c,v[101],num,k1,k2,n;
    int count=0;
    scanf("%d", &test);
    for(i=0;i<test;i++)
    {
        int max=0,min=1000000,j=0;
        scanf("%d", &num);
        char name[num][101];
        while(num--)
        {
            scanf("%s", &name[j]);
            scanf("%d %d %d",&a, &b, &c);
            v[j]=a*b*c;
            if(v[j]>max)
            {
                max=v[j];
                k1=j;
            }
            if(v[j]<min)
            {
                min=v[j];
                k2=j;
            }
            j++;
        }
        count++;
        if(max==min)
        {
            printf("Case %d: no theif\n", count);
        }
        else
        {
            printf("Case %d: %s took chocolate from %s\n",count,name[k1],name[k2]);
        }

    }
}