#include<stdio.h>

#include<string.h>
struct students
{
    char name[31];
    int crdeits;
    int score;
};
students a[100];
int main()
{
    int t,n,f;
    double sum1,sum2,gpa;
    scanf("%d",&t);
        while(t--)
        {
              sum1=0;sum2=0,f=0,gpa=0;
              scanf("%d",&n);
              for(int i=0;i<n;i++)
              {
                  scanf("%s%d%d",&a[i].name,&a[i].crdeits,&a[i].score);
                  sum1+=(a[i].crdeits*a[i].score);
                  sum2+=a[i].crdeits;
                  if(a[i].score<60)
                  {
                      f=1;
                  }
                  
                }
              gpa=sum1/sum2;
              if(f) printf("Sorry!\n");
              else
              {
                  printf("%.2lf\n",gpa);
              }
              if(t!=0)
                 printf("\n");
         }
        return 0;   
}