package 練習;
import java.io.PrintWriter;
import java.util.Scanner;
public class main{
	public static void main(String[] args){
		Scanner sc=new Scanner(System.in);
		PrintWriter pw=new PrintWriter(System.out);

		int h=sc.nextInt();
		int w=sc.nextInt();
		int n=sc.nextInt();
		int x=0;
		int y=0;
		char[] s=new char[n];
		int[] k=new int[n];

		for(int i=0;i<n;i++){
			s[i]=sc.next().toCharArray()[0];
			k[i]=Integer.parseInt(sc.next());
		}
		for(int i=n-1;i>=0;i--){
			if(s[i]=='R'&&k[i]==y){
				x=(x-1+w)%w;
			}else if(s[i]=='C'&&k[i]==x){
				y=(y-1+h)%h;
			}
		}

		if((x+y)%2==0){
			pw.println("white");
		}else if((x+y)%2==1){
			pw.println("black");
		}
		pw.close();
		sc.close();
	}
}