04. Train The Trainers

import java.util.Scanner;

public class P04TrainTheTrainers {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);

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

        String input = scanner.nextLine();

        double totalSumGrades = 0;
        int countGrades = 0;
        while (!input.equals("Finish")){
            String presentationName = input;

            double sumCurrentGrades = 0;
            for (int i = 1; i <= n; i++) {
                double grade = Double.parseDouble(scanner.nextLine());

                countGrades++;

                sumCurrentGrades += grade;
            }

            totalSumGrades += sumCurrentGrades;

            System.out.printf("%s - %.2f.%n", presentationName, sumCurrentGrades / n);

            input = scanner.nextLine();
        }

        System.out.printf("Student's final assessment is %.2f.", totalSumGrades / countGrades);
    }
}