public class Student {
    private String name;
    private Integer rollNumber;
    private int m1;
    private int m2;
    private int m3;
    private int totMarks;
    //Getter setter
}

public class StudentData {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        System.out.println("Enetr the number of Student");
        int totalStudent = sc.nextInt();
        Map<Integer,Student> map = new TreeMap<Integer,Student>();
        for(int i =0;i<totalStudent;i++) {
            Student ss = new Student();
            System.out.println("Enter the Student roll number");
            ss.setRollNumber(sc.nextInt());
            System.out.println("Enter the Student Name");
            ss.setName(sc.next());
            System.out.println("Enter the m1 marks ");
            ss.setM1(sc.nextInt());
            System.out.println("Enetr the m2 marks ");
            ss.setM2(sc.nextInt());
            System.out.println("Enter the m3 marks ");
            ss.setM3(sc.nextInt());
            ss.setTotMarks(ss.getM1()+ss.getM2()+ss.getM3());

            map.put(ss.getTotMarks(),ss);
            ss=null;
        }
        //stdList.forEach(System.out::print);
        for(Map.Entry<Integer,Student> m :map.entrySet()) {
            System.out.println(m);
        }

    }
}