using System;

​

public class Student {

    string name = "Lisa";

    public int age;

    public void SetName() {

        name = "Lisa";

    }

    public void PrintName() {

        Console.WriteLine(name);

    }

}

public class Program

{

    public static void Main()

    {

        Student student1 = new Student();

        Student student2 = new Student();

        student1.age = 12;

        student2.age = 9;

        student1.SetName();

        student1.PrintName();

        Console.WriteLine(student1.age);

        Console.WriteLine(student2.age);

        }

    }