using System;

using System.Collections.Generic;

using System.Linq;

public class Program

{

    public static void Main()

    {

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

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

        int[,] matrix= new int[rows,cols];  

        double[] rowAverages = new double[rows];

        for(int row=0;row<rows;row++)

        {

            for (int col=0;col<cols;col++)

            {

                matrix[row,col]=int.Parse(Console.ReadLine());

                rowAverages[row] +=matrix[row,col];

            }   

            rowAverages[row] /=cols;

        }

        for(int row=0;row < rows,row++)

        {

            Console.WriteLine(rowAverages[row]);

        }

        }

}

​