using System;

​

public class Program

{

    public void RowMax(int[, ] arr)

    {

        int maxcount = 0;

        int index = -1;

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

        {

            int count = 0;

            for (int j = 0; j < arr.GetLength(1); j++)

            {

                if (arr[i, j] == 1)

                {

                    count++;

                }

            }

​

            if (count > maxcount)

            {

                index = i;

            }

        }

​

        Console.WriteLine(index);

    }

​

    public static void Main()

    {

        int[, ] arr = new int[, ]

        {

            {

                0,

                0

            },

            {

                0,

                0

            },

        };

        Program p = new Program();

        p.RowMax(arr);

    }

}