using System;
public class Program
{
public static void Main()
int book1 = 300;
int book2 = 200;
int book3 = 100;
int total = book1+book2+book3;
String discount;
if(total >= 500)
discount = "100";
else
discount = "50";
Console.WriteLine(book1);
Console.WriteLine(book2);
Console.WriteLine(book3);
Console.WriteLine("Total = "+total);
Console.WriteLine("Discount = " + discount);
}