/************************************************
Grundlegende Algorithmen mit Java,
http://algorithmen-und-problemloesungen.de/
Copyright @2007-2009 by Doina Logofatu

in C#: Michael Gärtner
************************************************/

using System;
using System.IO;

namespace Logofatu
{
    class P09PhotoProblem
    {
        private static String FileInputName = "foto.in";
        private static String FileOutputName = "foto.out";

        private int m, n;
        private int[,] a;

        public P09PhotoProblem(int[,] a, int m, int n)
        {
            this.a = a;
            this.m = m;
            this.n = n;
        }

        private void color(int i, int j, int col)
        {
            if ( 0 <= i && i < m && 0 <= j && j < n && 1 == a[i, j] )
            {
                a[i, j] = col;
                color(i, j - 1, col);
                color(i, j + 1, col);
                color(i - 1, j, col);
                color(i + 1, j, col);
            }
        }

        void run(StreamWriter sw)
        {
            int col = 1;
            for ( int i = 0; i < m; i++ )
                for ( int j = 0; j < n; j++ )
                    if ( 1 == a[i, j] )
                        color(i, j, ++col);
            sw.WriteLine(col-1);
            for ( int i = 0; i < m; i++ )
            {
                for ( int j = 0; j < n; j++ )
                {
                    sw.Write(a[i,j]);
                    sw.Write(' ');
                }
                sw.WriteLine();
            }
        }


        static void Main(string[] args)
        {
            StreamReader sr = null;
            StreamWriter sw = null;
            try
            {
               sw = new StreamWriter(FileOutputName);
               sr = new StreamReader(FileInputName);
               string[] sArray = sr.ReadLine().Split(' ');
               int m = int.Parse(sArray[0]);
               int n = int.Parse(sArray[1]);
               int[,] a = new int[m, n];
               for ( int i = 0; i < m; i++ )
               {
                   sArray = sr.ReadLine().Split(' ');
                   for ( int j = 0; j < n; j++ )                   
                       a[i, j] = int.Parse(sArray[j]);                  
               }
               new P09PhotoProblem(a, m, n).run(sw);    
            }
            finally
            {
                if ( sr != null )
                {
                    sr.Close();
                }
                if ( sw != null )
                {
                    sw.Close();
                }
            }
        }
    }
}