class Qizi
{
	public static int _black=0,_white=1;
	
	protected int x,y;
	protected int color;
	
	public Qizi(int i,int j,int c)
	{
		x=i;
		y=j;
		color=c;
	}
	
	public String toString()
	{
		String c=(color==_black?"black":"white");
		return "["+x+","+y+"]:"+c;
	}
}