import java.util.Scanner;

public class N351
{
	public static void main(String[] args)
	{
		Scanner sc=new Scanner(System.in);
		int h=sc.nextInt(),w=sc.nextInt();
		int n=sc.nextInt();
		String[] s=new String[n];
		int[] k=new int[n];
		int nowh=0,noww=0;
		for(int i=0;i<n;i++)
		{
			s[i]=sc.next();
			k[i]=sc.nextInt();

		}
		for(int i=n-1;n>=0;n--)
		{
			if(s[i].equals("R"))
			{
				if(k[i]==nowh)
				{
					noww--;noww=(noww==-1)?w-1:noww;
				}
			}
			if(s[i].equals("C"))
			{
				if(k[i]==noww)
				{
					nowh--;nowh=(nowh==-1)?h-1:nowh;
				}
			}
		}
		if((nowh+noww)%2==0){System.out.println("white");}
		else{System.out.println("black");}

	}

}