using System;
using System.Collections.Generic;
using System.Linq;

public class Program
{
	public static void Main()
	{
		 string[] r = Console.ReadLine().Split(' ');
            int n = int.Parse(r[0]), m = int.Parse(r[1]);
            int[,] a = new int[n, m];
            for (int i = 0; i < n; i++)
            {
                int[] b = Console.ReadLine().Split(' ').Select(int.Parse).ToArray();
                for (int j = 0; j < m; j++)
                    a[i, j] = b[j];
            }
            int s1, s2, s3, s4;
            s1 = s2 = s3 = s4 = 0;
            for (int i = 0; i < n; i++)
                for (int j = 0; j < m; j++)
                {
                    if (i == j)
                        s1 += a[i, j];
                    if (i + j == n - 1)
                        s2 += a[i, j];
                    if (i < j)
                        s3 += a[i, j];
                    if (i > j)
                        s4 += a[i, j];
                }
            if (s1 == s2 && s3 % 2 == 0 && s4 % 2 != 0)
            {
                s1 = s2 = s3 = s4 = 0;
                for (int i = 0; i < n; i++)
                    for (int j = 0; j < m; j++)
                    {
                        if (i > j)
                            s1 += a[i, j];
                        if (i == j && a[i, j] % 2 == 0)
                            s2 += a[i, j];
                        if (((i == 0) || (i == n - 1)) && (a[i, j] % 2 == 0))
                            s3 += a[i, j];
                        if (((j == 0) || (j == m - 1)) && (a[i, j] % 2 != 0))
                            s4 += a[i, j];
                    }

                Console.WriteLine("YES\nThe amount of money won is: {0:0.00}", Math.Round((s1+s2+s3+s4)/4.0,2));
            }
            else
                Console.WriteLine("NO");
	}
}