Main

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.ArrayList;
import java.util.Collections;
import java.util.Comparator;
import java.util.List;
import java.util.stream.Collectors;
import java.util.stream.Stream;

/*
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/**
 *
 * @author Savina
 */
public class Main {

    public static void main(String[] args) throws IOException {
        BufferedReader bf = new BufferedReader(new InputStreamReader(System.in));
        int numberOfStudents = Integer.parseInt(bf.readLine());
        ArrayList<Student> studentsList = new ArrayList<>(numberOfStudents);
        for (int i = 0; i < numberOfStudents; i++) {
            String[] input = bf.readLine().split(" ");
            String studentName = input[0];
            Student s = new Student(studentName);
            for (int j = 1; j < input.length; j++) {
                double grade = Double.parseDouble(input[j]);
                s.getGrades().add(grade);
            }
            studentsList.add(s);
        }
        List<Student> selectedStudents = studentsList.stream().filter(a -> a.getAverageGrade() >= 5.0).collect(Collectors.toList());
        Collections.sort(selectedStudents);
        for (Student selectedStudent : selectedStudents) {
            System.out.printf("%s -> %.2f%n", selectedStudent.getName(), selectedStudent.getAverageGrade());
        }

    }
}