package yukicoder351;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.PrintStream;
import java.io.PrintWriter;
import java.util.Arrays;
import java.util.Iterator;

public class Main {
	public static void main(String[] args){
		Scanner sc=new Scanner(System.in);
		Printer pr=new Printer(System.out);
		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].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--;
				}
			}
		}
		pr.println((x+y)%2==0?"white":"black");
		pr.close();
		sc.close();
	}
	private static class Scanner{
		BufferedReader br;
		Iterator<String> it;
		Scanner(InputStream in){
			br=new BufferedReader(new InputStreamReader(in));
		}
		String next()throws RuntimeException{
			try{
				if(it==null||!it.hasNext()){
					it=Arrays.asList(br.readLine().split(" ")).iterator();
				}
				return it.next();
			}catch(IOException e){
				throw new IllegalStateException();
			}
		}
		int nextInt() throws RuntimeException{
			return Integer.parseInt(next());
		}
		long nextLong() throws RuntimeException{
			return Long.parseLong(next());
		}
		float nextFloat() throws RuntimeException{
			return Float.parseFloat(next());
		}
		double nextDouble() throws RuntimeException{
			return Double.parseDouble(next());
		}
		void close(){
			try{
				br.close();
			}catch(IOException e){
				throw new IllegalStateException();
			}
		}
	}
	private static class Printer extends PrintWriter{
		Printer(PrintStream out){
			super(out);
		}
	}
}