package yukicoder351;
import java.util.Scanner;
public class Main {
	public static void main(String[] args){
		Scanner sc=new Scanner(System.in);
		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();
			//行の操作R、列の操作C
			k[i]=sc.nextInt();
		}
		for(int i=n-1;i>=0;i--){
			if(s[i]=="R"&&k[i]==y){
				if(x==0){
					x=w-1;
				}else if(x!=0){
					x--;
				}
			}else if(s[i]=="C"&&k[i]==x){
				if(y==0){
					y=h-1;
				}else if(y!=0){
					y--;
				}
			}
		}
		if((x+y)%2==0){
			System.out.println("white");
		}else if((x+y)%2==1){
			System.out.println("black");
		}
	}
}