using System;

public class Program

{

    public static void Main()

    {

        string[] s1=new string[30];

        int[] pri=new int[30];

        int n=1,temp=0,t1=0;

        for(int i=0;i<=n;i++)

        {

        Console.WriteLine("Enter  Products Name :");

        s1[i] =Console.ReadLine();

        Console.WriteLine("Enter the Product Price :");

        pri[i] = Convert.ToInt32(Console.ReadLine());

    }

        Console.WriteLine("which Product you want set new price :");

        string s2=Console.ReadLine();

        for(int i=0;i<=n;i++)

        { 

            if(s1[i]==s2)

            {

                temp =pri[i];

                Console.WriteLine("Enter new Price :");

                pri[i]=Convert.ToInt32(Console.ReadLine());

                t1=pri[i];

                Console.WriteLine("{0} price has changed- New Price {1} ",s1[i],pri[i]);

                break;

            }

            else

            {

                Console.WriteLine("Product does not match");

                break;

            }

        }

        Console.WriteLine("you want to know precentage of raised price : (Type yes) If no the (Type No)");

        string s3=Console.ReadLine();

        s3=s3.ToLower();

        if(String.Equals(s3,"yes"))

        {

            int k1=t1-temp;

            int k2= (k1*100)/temp;

            Console.WriteLine(" increased price by {0}%  ",k2);

        }

        else

        {

            Console.WriteLine("Thanks you");

        }

    }

}