import java.util.*;

public class Grid
{
	int rows;
	int columns;
	ArrayList<Location> locations = new ArrayList<Location>();
	public Grid(int numRows, int numColumns)
	{
		rows = numRows;
		columns = numColumns;
	}
	public void add(int row, int column, String description)
	{
		Location point = new Location(row, column, description);
		locations.add(point);
	}
	public String getDescription(int row, int column)
	{
		int index = -1;
		for(int i = 0; i < locations.size(); i++)
		{
			if(locations.get(i).X == row && locations.get(i).Y == column)
			{
				index = i;
			}
		}
		if(index != -1)
		{
			return locations.get(index).Description;
		}
		else
		{
			return "Point not recognized";
		}
	}
	public ArrayList<Location> getDescribedLocations()
	{
		Collections.reverse(locations);
		return locations;
	}
	public class Location
	{
		int X;
		int Y;
		String Description;
		public Location(int x, int y, String description)
		{

			X = x;
			Y = y;
			Description = description;
		}
		public int getRow()
		{
			return X;
		}
		public int getColumn()
		{
			return Y;
		}
		public String getDescription()
		{
			return Description;
		}
	}
}