import java.util.*;

/**
 * Created by snap2n on 13-Nov-15.
 */
public class ExamScore {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);

        ArrayList<String> tableLines = new ArrayList<>();
       // String inputLine = sc.nextLine();
        while (sc.hasNextLine()){
            tableLines.add(sc.nextLine());
           // inputLine = sc.nextLine();
        }
        TreeMap<Integer, TreeMap<String, Double>> wholeMap = new TreeMap<>();
        ArrayList<String[]> tokens = remakeInput(tableLines);

        for (String[] token : tokens) {
            StringBuilder currentStudentSB = new StringBuilder();
            currentStudentSB.append(token[0]);
            currentStudentSB.append(" ");
            currentStudentSB.append(token[1]);
            String currentStudent = currentStudentSB.toString();
            int currentExamScore = Integer.parseInt(token[2]);
            double currentGrade = Double.parseDouble(token[3]);

            if (!wholeMap.containsKey(currentExamScore)){
                wholeMap.put(currentExamScore, new TreeMap<>());
                wholeMap.get(currentExamScore).put(currentStudent, currentGrade);
            }else{
                if (!wholeMap.get(currentExamScore).containsKey(currentStudent)){
                    wholeMap.get(currentExamScore).put(currentStudent, currentGrade);
                }
            }
        }

        for (Map.Entry<Integer, TreeMap<String, Double>> score: wholeMap.entrySet()) {
            System.out.printf("%d -> ", score.getKey());
            ArrayList<String> names = new ArrayList<>();
            ArrayList<Double> grades = new ArrayList<>();
            double avg;
            double total = 0;
            for (Map.Entry<String, Double> name : wholeMap.get(score.getKey()).entrySet()) {
                names.add(name.getKey());
                grades.add(name.getValue());
            }
            Collections.sort(names);
            System.out.print(names);
            for (int i = 0; i < grades.size(); i++) {
                total += grades.get(i);
            }
            avg = total / (double)grades.size();
            System.out.printf("; avg=%.2f\n", avg);
        }

    }
    public static ArrayList<String[]> remakeInput(ArrayList<String> list){
        list.remove(0);
        list.remove(0);
        list.remove(0);
        list.remove(list.size() - 1);

        ArrayList<String[]> informationLines = new ArrayList<>();
        for (String tableLine : list) {
            String tokens = tableLine.replace('|', ' ').replaceAll("\\s+", " ").trim();
            String[] arrTokens = tokens.split(" ");
            informationLines.add(arrTokens);
        }
        return informationLines;
    }
}