Malko pomosht molq 
 

import java.util.Scanner;

public class zadacha3 {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        String name = scanner.nextLine();
        double counter = 1;
        double sum = 0;
        double notPassed = 0;
        while (counter <= 12){
            double grade = Double.parseDouble(scanner.nextLine());
            if (grade >= 4){
                sum = sum + grade;
                counter++;
            }else {
                notPassed += 1;
            }
        }if (notPassed < 2){
            System.out.printf("%s graduated. Average grade: %.2f", name, sum/12);
        }else {
            System.out.printf("%s has been excluded at %d grade",name , counter);
        }
    }
}

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