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

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

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