import java.io.*;
import java.util.*;

public class Grades {
    private static final String FILE = "prov.txt";
    private static final int TESTS = 5;

    public static void main(String[] args) throws FileNotFoundException {
        int students = 0;
        Scanner sc = new Scanner(new File(FILE));
        while(sc.hasNext()) {
            students++;
            sc.nextLine();
        }
        students = students/2;
        String[] studentNames = new String[students];
        int[][] scores = new int[students][TESTS];
        sc.close();
        sc = new Scanner(new File(FILE)); // reset scanner
        for (int i=0;i<students;i++) {
            studentNames[i] = sc.nextLine();
            for (int j=0;j<TESTS;j++) {
                scores[i][j] = sc.nextInt();
            }
            sc.nextLine(); //advance past line
        }
        for (int i=0;i<students;i++) {
            double average = 0;
            for (int j=0;j<TESTS;j++) {
                average += scores[i][j];
            }
            average = average/TESTS;
            System.out.printf("%s: %.2f\n", studentNames[i], average);
        }
        System.out.println("\nTest results:");
        for (int i=0;i<TESTS;i++) {
            double average = 0;
            for (int j=0;j<students;j++) {
                average += scores[j][i];
            }
            average = average/students;
            System.out.printf("Test %d: %.2f\n", i+1, average);
        }
    }

}