package 練習;
import java.util.Date;
import java.util.Scanner;
public class main{
	public static void main(String[] args){
		Scanner sc=new Scanner(System.in);
		long exec_time=new Date().getTime();

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

		for(int i=0;i<n;i++){
			s[i]=sc.next();
			k[i]=sc.nextInt();
		}
		for(int i=n-1;i>=0;i--){
			if(s[i].equals("R")){
				if(k[i]==y){
					if(x==0)x=w-1;
					if(x!=0)x--;
				}
			}else if(s[i].equals("C")){
				if(k[i]==x){
					if(y==0)y=h-1;
					if(y!=0)y--;
				}
			}

		}
		if((x+y)%2==0)System.out.println("white");
		if((x+y)%2==1)System.out.println("black");
		System.err.println(new Date().getTime()-exec_time+"ms");

	}
}