using System;

public class Program

{

    public static void Main()

    {

    string input = Console.ReadLine();

    double price1 = double.Parse(input);

    input = Console.ReadLine();

    double price2= double.Parse(input);

    Console.WriteLine("price number 1 before discount: "+ price1);

    Console.WriteLine("price number 2 before discount: " +price2);

    price1 = price1*0.9;

    price2= price2*0.9;

    Console.WriteLine("price number 1 after discount "+ price1);

    Console.WriteLine("price number 2 after discount "+ price2);

​

    }   

}