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

// The main method must be in a class named "Main".
class Student implements Comparable<Student>{
    String name; 
    int rollNumber;
     Student(String name, int rollNumber) {
        this.name = name;
        this.rollNumber = rollNumber;
    }
    
    public int getRollNumber() {
        return rollNumber;
    }
    
    public String getName() {
        return name;
    }
    public int compareTo(Student other){
        return this.rollNumber-other.rollNumber;
    }

}
class Main {
    public static void main(String[] args) {
        ArrayList<Student> arr=new ArrayList<>();
        arr.add(new Student("kusuma",17));
        arr.add(new Student("Eishwa",14));
        Collections.sort(arr);
        for(Student st:arr){
            System.out.println(st.getName());
        }
    }
}