package yukicoder351;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.PrintWriter;
import java.util.Scanner;
public class Main {
	public static void main(String[] args){
		Scanner sc=new Scanner(System.in);
		try{
			BufferedReader bf=new BufferedReader(new InputStreamReader(System.in));
		
		PrintWriter pw=new PrintWriter(System.out);
		int h=Integer.parseInt(sc.next());
		int w=Integer.parseInt(sc.next());
		int n=Integer.parseInt(sc.next());
		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]=Integer.parseInt(bf.readLine());
		}
		bf.close();
		for(int i=n-1;i>=0;i--){
			if(s[i].equals("R")&&k[i]==y){
				if(x==0){
					x=w-1;
				}else if(x!=0){
					x--;
				}
			}else if(s[i].equals("C")&&k[i]==x){
				if(y==0){
					y=h-1;
				}else if(y!=0){
					y--;
				}
			}
		}
		pw.println((x+y)%2==0?"white":"black");
		pw.close();
		}catch(IOException e){
			e.printStackTrace();
		}
	}
		
}