using System;

public class Program

{

    public static void Main()

    {

        int[] intArr = new int[] {0,0,0,0};

        Console.WriteLine(MaxConsecutiveOnes(intArr));

​

    }

    public static int MaxConsecutiveOnes(int[] arr)

    {

        int count = 0; //initialize count

        int result = 0; //initialize max

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

        {

            // Reset count when 0 is found

            if (arr[i] == 0)

                count = 0;

            // If 1 is found, increment count

            // and update result if count

            // becomes more.

            else

            {

                count++; //increase count

                result = Math.Max(result, count);

            }

        }

        return result;

    }

}