import java.util.HashMap;
import java.util.Map;
import java.util.Scanner;

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

        Map<String, HashMap<Integer, Double>> test = new HashMap<>();

        String name = "Ivan";
        int age = 20;
        double grade = 4.5;
        test.put(name, new HashMap<>());
        test.get(name).put(age, grade);

        name = "Pesho";
        age = 25;
        grade = 5.64;
        test.put(name, new HashMap<>());
        test.get(name).put(age, grade);

        name = "Dragan";
        age = 16;
        grade = 3.27;
        test.put(name, new HashMap<>());
        test.get(name).put(age, grade);

        // Сортиране по възраст, ако са равни да се сортират по оценка ?
    }
}