using System;

public class Program

{

    public static void Main()

    {

        int sum = 0;

        int[] arr = new int[10];

        Console.WriteLine("Welcome, please enter the weights of each ingredients");

        string qwe = Console.ReadLine();

        if(qwe[qwe.Length-1] != ' ')

        {

            qwe += " ";

        }

        int count = 0;

        string num = "";

        do

        {

            num = qwe.Substring(0,qwe.IndexOf(" "));

            int n = Convert.ToInt32(num);

            if(n>=0 && count<10)

            {

                arr[count]=n;

                sum = sum + n;

                count++;

            }

            qwe = qwe.Substring(qwe.IndexOf(" ")+1);

        }while(Convert.ToInt32(num)>0);

        if(count<3)

        {

            Console.WriteLine("Not enough ingredients");

        }

        else if(count>10)

        {

            Console.WriteLine("Too many ingredients");

        }

        else

        {   

            int pure;

            double finalWeight; 

            pure = count*10;

            finalWeight = (float)sum/count;

            finalWeight = Math.Round(finalWeight,3); 

            Console.WriteLine("The final product weights "+finalWeight+" pounds and is "+pure+" percent pure "); 

        }

    }

}