using System;
using System.Collections;
using System.Collections.Generic;
using System.Linq;
using System.Text;

class TEST{
	static void Main(){
		Sol mySol =new Sol();
		mySol.Solve();
	}
}

class Sol{
	public void Solve(){
		int r=0;
		int c=0;
		for(int i=N-1;i>=0;i--){
			if(A[i][0]=='R'){
				int r0=int.Parse(A[i].Substring(2));
				if(r==r0){
					c=(c-1+W)%W;
				}
			}
			if(A[i][0]=='C'){
				int c0=int.Parse(A[i].Substring(2));
				if(c==c0){
					r=(r-1+H)%H;
				}
			}
//Console.WriteLine(r+" "+c);
		}
		Console.WriteLine((r+c)%2==0?"white":"black");
	}
	int H,W;
	int N;
	String[] A;
	public Sol(){
		var d=ria();
		H=d[0];W=d[1];
		N=ri();
		A=new String[N];
		for(int i=0;i<N;i++){
			A[i]=rs();
		}
	}

	static String rs(){return Console.ReadLine();}
	static int ri(){return int.Parse(Console.ReadLine());}
	static long rl(){return long.Parse(Console.ReadLine());}
	static double rd(){return double.Parse(Console.ReadLine());}
	static String[] rsa(char sep=' '){return Console.ReadLine().Split(sep);}
	static int[] ria(char sep=' '){return Array.ConvertAll(Console.ReadLine().Split(sep),e=>int.Parse(e));}
	static long[] rla(char sep=' '){return Array.ConvertAll(Console.ReadLine().Split(sep),e=>long.Parse(e));}
	static double[] rda(char sep=' '){return Array.ConvertAll(Console.ReadLine().Split(sep),e=>double.Parse(e));}
}