2
8 5
1 1 1 2 3 4 5 6
4 7
1 2 3 4

int main()
   {
    int number;
    string filePath;
    int numberOfInstances;
    int Max;
    int Rings;
    cout << "please input your file path: " ; //ie, D:\sample.txt

    cin >> filePath;

    ifstream fin;

    fin.open(filePath.c_str());
    if(fin.fail()) {
        cout << "sorry, fail to open" << endl;
        exit(1);
    }

    fin >> numberOfInstances;

    vector<int> vect1;

   for(int i = 0; i < numberOfInstances; i++) {
        fin >> Rings;
        fin >> Max;
        for(i = 0; i < Rings; i++) {
            fin >> number;
            vect1.push_back(number);
        }

      //
     //code to process Vect1, eg, sort it
     //

     for(i = 0; i < Rings; i++) {
            vect1.pop_back();
     }

    }
     fin.close();
    return 0;