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, c = 0;
		for(int i=N-1;i>=0;i--){
			switch (Q[i][0][0]){
				case 'R':
					int tr = int.Parse(Q[i][1]);
					if(r == tr){
						c--;
						if(c < 0) c += W;
					}
					break;
				case 'C':
					int tc = int.Parse(Q[i][1]);
					if(c == tc){
						r--;
						if(r < 0) r += H;
					}
					break;
			}
			//Console.WriteLine("r:{0} c:{1}",r,c);
		}
		Console.WriteLine((r+c) % 2 != 0 ? "black" : "white");
		
	}
	int H,W;
	int N;
	String[][] Q;
	public Sol(){
		var d = ria();
		H = d[0]; W = d[1];
		N = ri();
		Q = new String[N][];
		for(int i=0;i<N;i++) Q[i] = rsa();
	}

	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));}
}