using System;
class P{
	public static void Main(){
		string[] SHW = Console.ReadLine().Split();
		int H = int.Parse(SHW[0])-1;
		int W = int.Parse(SHW[1])-1;
		int N = int.Parse(Console.ReadLine());
		string[] S = new string[N];
		int[] K = new int[N];
		int x = 0;
		int y = 0;
		int n = 0;
		for(int i=0; i<N; ++i){
			string[] s = Console.ReadLine().Split();
			S[i] = s[0];
			K[i] = int.Parse(s[1]);
		}
		for(int i=N-1; i>-1; --i){
			if(S[i]=="C" && K[i] == x){
				y = y-1<0 ? H : y-1;
			}else if(S[i]=="R" && K[i] == y){
				x = x-1<0 ? W : x-1;
			}
		}
		Console.WriteLine((y+x)%2==0 ? "white" : "black");
	}
}