/CodeBahasaPemrograman/Latihan/oop_banget_25.cpp

#include <iostream>
#include<iomanip>
#include <vector>
using namespace std;
class vektor{
public:
    int t;
    unsigned int i;
    vector<int> v6;

    int hapus,CountOrigin,CountModified, hasilOrigin,hasilModified;
    double RataOrigin, RataModified;

    vektor(){
        t = 0;
        CountOrigin = 0;
        hapus = 0;
        CountOrigin = 0;
        CountModified = 0;
        hasilOrigin=0;
        hasilModified=0;
        RataOrigin = 0.0;
        RataModified=0.0;
    }

    void setVektor(vector<int> vk){
        v6 = vk;
    }

};
int main ()
{
  int t;
  vektor v6;
  cin >> t;
  do{
    v6.push_back(t);
    cin >> t;
  }while (t!= -9);

  for (i=0; i < v6.size(); i++)
    hasilOrigin += v6[i];

  CountOrigin = v6.size();
  RataOrigin = double(hasilOrigin) / double(CountOrigin);

  cin >> hapus;
  i=0;
  do{
    if(hapus == 1){
        v6.erase(v6.begin());
        cin >> hapus;
        i++;
    }else{
        v6.erase(v6.begin()+hapus-i-1);
        cin >> hapus;
        i++;
    }
  }
  while(hapus != -9);

  for (i=0; i < v6.size(); i++)
    hasilModified += v6[i];

  CountModified = v6.size();
  RataModified = double(hasilModified) / double(CountModified);

  cout << CountOrigin << " " << CountModified << endl;

  if(v6.empty())
    cout << -9.99 << " " << -9.99 << endl;
  else
    cout << fixed << setprecision(2) << RataOrigin << " " << fixed << setprecision(2) << RataModified << endl;

  return 0;
}