package com.company;

import java.net.URLClassLoader;
import java.net.URLConnection;
import java.sql.SQLOutput;
import java.sql.Struct;
import java.util.*;

public class Main {

    public static void main(String[] args) {
    Scanner scanner = new Scanner(System.in);

    Map<String, List<Double>> studentAverageGrade = new HashMap<>();

    int countOfStudents = Integer.parseInt(scanner.nextLine());

        for (int i = 0; i < countOfStudents; i++) {
            String studentName = scanner.nextLine();
            String[] studentGrades = scanner.nextLine().split(" ");
            List<Double> inputGrades = new ArrayList<>();

            for (int j = 0; j < studentGrades.length; j++) {
                inputGrades.add(Double.parseDouble(studentGrades[j]));
            }

            studentAverageGrade.put(studentName, inputGrades);
        }

        printStudentInfo(studentAverageGrade);

    }

    private static void printStudentInfo(Map<String, List<Double>> studentAverageGrade) {
        for (Map.Entry<String, List<Double>> entry : studentAverageGrade.entrySet()) {
            printStudentName(entry);
            printStudentGrades(entry);
            printStudentAverageGrade(entry);
        }
    }

    private static void printStudentAverageGrade(Map.Entry<String, List<Double>> entry) {
        double sumGrade = entry.getValue().stream().mapToDouble(Double::doubleValue).average().getAsDouble();
        System.out.println();
        System.out.println("Average grade: " + String.format("%.2f", sumGrade));
    }

    private static void printStudentGrades(Map.Entry<String, List<Double>> entry) {
        List<Double> studentGradesList = entry.getValue();
        System.out.print("Student grades: ");

        for (Double grade : studentGradesList) {
            System.out.print(String.format("%.2f", grade) + " ");
        }
    }

    private static void printStudentName(Map.Entry<String, List<Double>> entry) {
        String nameOfStudent = entry.getKey();
        System.out.println("Student name: " + nameOfStudent);
    }
}