using System;

public class Program

{

    public static void Main()

    {   

        int sum=0;

        int[] a={1,8,2,0,1,0,5,4};

        for(int i=0;i<a.Length;i++)

        {

            if(a[i]!=0)

            {

              sum=sum+a[i];

            }

        }

        Console.WriteLine(sum);

    }

}