#include <iostream>
using namespace std;

int main()
{
  int count,n,score,total_scores,max_score,total_maxes;
  double percentage;

  total_scores = total_maxes = 0;
  cout << "How many exercises to input? ";
  cin >> n;

  for(count = 1;count<=n;count++){
    cout << "\nScore received for exercise " << count << ": ";
    cin >> score;
    cout << "Total points possible for exercise " << count << ": ";
    cin >> max_score;
    total_scores += score;
    total_maxes += max_score;
  }
  percentage = ((double)total_scores/(double)total_maxes) * 100.0;
  cout.setf(ios::fixed);
  cout.setf(ios::showpoint);
  cout.precision(2);

  cout << "\nYour total is " << total_scores << " out of " << total_maxes;
  cout << ", or " << percentage << "%.\n";
  return 0;
}