7.6.15

using System;
using System.Collections.Generic;
using System.Collections.Specialized;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace myloyorrr
{
    internal class Program
    {
        static void In(int[][] a, int n, int m)
        {


            for (int i = 0; i < n; i++)
            {
                string[] s = Console.ReadLine().Split();

                for (int j = 0; j < m; j++)
                {
                    a[i][j] = int.Parse(s[j]);

                }

            }
        }

        static void delst(int[][] a, ref int n, int m, int k)
        {
            for (int i = k; i < n-1; i++)
            {
                a[i] = a[i + 1];
            }
            n--;
        }



        static void delsb(int[][] a, ref int m, int n, int k)
        {
            for (int x = 0; x < n; x++)
            {
                for (int y = k; y < m - 1; y++)
                {
                    a[x][y] = a[x][y + 1];
                }
            }
            m--;
        }

        static void Out(int[][] a, int n, int m)
        {
            for (int i = 0; i < n; i++)
            {
                for (int j = 0; j < m; j++)
                {
                    Console.Write(a[i][j] + " ");
                }
                Console.WriteLine();
            }
        }

        static void Main()
        {
            int[][] a;
            int n = int.Parse(Console.ReadLine());
            int m = int.Parse(Console.ReadLine());
            a = new int[n][];
            for (int i = 0; i < n; i++)
            {
                a[i] = new int[m];
            }

            In(a, n, m);

            for (int i = 0; i < n; i++)   // проверка строк
            {
                bool f = true;
                for (int j = 0; j < m; j++)
                {
                    if (a[i][j] != 0)
                    {
                        f = false;
                        break;
                    }
                }
                if (f == true)
                {
                    delst(a, ref n, m, i);
                    i--;
                }
            }

            //Out(a, n, m);
            for (int j = 0; j < m; j++) // проверка столбцов
            {
                //Console.WriteLine(j);
                bool f = true;
                for (int i = 0; i < n; i++)
                {
                    if (a[i][j] != 0)
                    {
                        f = false;
                        break;
                    }
                }
                if (f == true)
                {
                    delsb(a, ref m, n, j);
                    j--;
                }
                //Out(a, n, m);
            }
            Out(a, n, m);
        }
    }
}