import java.util.*;
import java.io.*;
public class g
{


	final static int M = 75, N = 25;
	final static char DOT = '.';

     public static void init(char[][] grid)
     {
     	for(int r = 0;  r <= N + 1 ; r++)
     	{
     		for(int c = 0; c <= M + 1; c++)
     	    {
     	    	grid[r][c] = DOT;
     	    }
     	}
     }

     public static void read(char[][] grid)
     {
     	Scanner kbd = null;;
	    File f = new File("C:\\Users\\Usiel\\Desktop\\life1.dat");
	    String s;
	    try
	    {
	    	kbd = new Scanner(f);
	    }catch (Exception e){}
	    for(int r = 1; r <= N; r++)
	    {
	    	s = kbd.next();
	    	for(int c = 1; c <= M; c++)
	    	{
	    		grid[r][c] =s.charAt(c-1);
	    	}
	    }
     }
	public static char[][] newgrid(char[][] grid)
	{
		char[][] grid2 = new char[N+2][M + 2];
		for(int row = 1; row <= N; row++)
		{
		 	for (int col = 1; col <= M; col++)
		 	{
		 		if (grid[row][col] == 'X' && neighbor(grid, row, col)==2)
		 		{
		 			grid2[row][col] = 'X';
		 		}
		 		else if (grid[row][col] == 'X' && neighbor(grid, row, col)==3)
		 		{
		 			grid2[row][col] = 'X';
		 		}
		 		else if (grid[row][col] == '.' && neighbor(grid, row, col)==3)
		 		{
		 			grid2[row][col] = 'X';
		 		}
		 		else
		 		{
		 			grid2[row][col] = '.';
		 		}
		 	}
		}
		return grid2;
	}

     public static int neighbor(char[][] grid, int row, int col)
     {
     	int count = 0;
     	for(int r = row -1; r <= row+ 1; r++)
     	{
     		for( int c = col-1; c<= col+1; c++)
     		{
     			if( grid[r][c] == 'X' )
     			{
     				 count++;
     			}
     		}
     	}
     	if(grid[row][col] =='X') count = count -1;
     	return count;
     }

     public static boolean isBlank(char[][] grid )
     {

     	for(int r = 1;  r <= N; r++)
     	{
     		for( int c = 1; c<= M; c++)
     		{
     			if( grid[r][c] == 'X' )
     			{
     				 return false;
     			}
     		}
     	}
     	return true;
     }

	 public static boolean stable(char[][] grid, char[][] grid2)
	 {

	 	for(int r = 1;  r <= N; r++)
	 	{
	 		for( int c = 1; c<= M; c++)
	 		{
	 			if( grid[r][c] != grid2[r][c] )
	 			{
	 				 return false;
	 			}
	 		}
	 	}
	 	return true;
	 }

     public static void print(char[][] grid)
     {
     	for(int r = 1;  r <= N ; r++)
     	{
     		for(int c = 1; c <= M; c++)
     	    {
     	    	 System.out.print( grid[r][c]);
     	    }
     	    System.out.println();
     	}
     }
     public static int pause()
     {
     	System.out.println("1 to continue, 0 to exit");
     	int temp = 2;
     	Scanner wait = new Scanner(System.in);
     	temp = wait.nextInt();
     	while (temp != 1 && temp != 0);
     	return temp;
     }

	 public static void main(String[] args)
	 {
	 	int exit = 1;
	    char[][] grid = new char[N+2][M + 2];
	    init(grid);
	    read(grid);
	    print(grid);
	    System.out.println();
	    exit = pause();
	    char[][] grid2 = new char[N+2][M + 2];
	    grid2 = newgrid(grid);
	 	if (exit != 0 && !isBlank(grid))
	 	{
		    print(grid2);
		    System.out.println();
		    exit = pause();
		    while (exit != 0 && !isBlank(grid) && !isBlank(grid2) && !stable(grid, grid2))
		    {
			    grid = newgrid(grid2);
			    print(grid);
			    System.out.println();
			    exit = pause();
			    if (exit != 0 && !isBlank(grid) && !isBlank(grid2) && !stable(grid, grid2))
			    {
					grid2 = newgrid(grid);
				    print(grid2);
				    System.out.println();
				    exit = pause();
			    }
		    }
	 	}
	    if (stable(grid, grid2))
	    {
	    	System.out.println("The environment is stable and will not change.");
	    }
	    if (isBlank(grid) || isBlank(grid2))
	    {
	    	System.out.println("The environment is empty.");
	    }
	}
}