using System;

public class Program

{

    public static void Main()

    {

        int x=0;

        int knia=0;

        int sum=0;

        int counter=0;

        Console.WriteLine("insert price of knia");

        x=int.Parse(Console.ReadLine());

        while (x!=-1)

        {

            sum+=x;

            if (x>100)

            {

                counter++;

            }

            Console.WriteLine("insert price of knia");

            x=int.Parse(Console.ReadLine());

        }

        if (counter>5)

        {

            Console.WriteLine("you bought too much");

        }

        Console.WriteLine("the sum is:" +sum);

    }

}