using System;

public class Program

{

    public static int NewPrice (double oldPrice)

    {

        Console.Write("Enter number of products:");

        oldPrice=double.Parse(Console.ReadLine());

        for(int i=0;i<oldPrice;i++){

    if(oldPrice<10){

    oldPrice=oldPrice*1.3;

                Console.Write("New Price:"+oldPrice);

    }

        }

        return NewPrice;

    }

    public static void Main()

    {

        Console.WriteLine("Hello World");

    }

}