hdoj：2061

#include <iostream>
#include <string>

using namespace std;

int main()
{
    int n,k;
    double gpa,s,credit,score;
    string name;
    bool flag = true;
    cin >> n;
    while (n--)
    {
        cin >> k;
        gpa = 0.0;
        s = 0.0;
        flag = true;
        for (int i = ; i <= k; i++)
        {
            cin >> name >> credit >> score;
            gpa += credit * score;
            s += credit;
            if ( - score >0.000001)
                flag = false;
        }

        gpa = gpa *1.0/ s;
        if (flag)
            printf("%.2lf\n", gpa);
        else
            printf("Sorry!\n");

        if (n != )
            printf("\n");
    }
    return ;
}