package yukicoder;

import java.util.Scanner;

public class No351 {
public static void main(String[] args) {
	Scanner sc = new Scanner(System.in);
	int H = sc.nextInt();//受け取り開始
	int W = sc.nextInt();
	int N = sc.nextInt();
	String[] S = new String[N+1];
	for(int i = 0; i < S.length; i++){
		S[i] = sc.nextLine();
	}//受け取り終了
	int[][] B = new int[H][W];//ブロック作成開始
	for(int i = 0; i < H; i++){
		for(int j = 0; j < W; j++){
			if(i%2 == 0){
				if(j%2 == 0){
					B[i][j] = 1;
				}
			}else if(i%2 == 1){
				if(j%2 == 1){
					B[i][j] = 1;
				}
			}
		}
	}//ブロック作成終了
	for(int i = 1; i < S.length; i++){
		char c = S[i].charAt(0);
		String SNum = S[i].substring(2, 3);
		int num = Integer.parseInt(SNum);
		switch(c){
		case 'R':
			int tmp = B[num][W-1];
			for(int j = W - 1; j >= 1; j--){
				B[num][j] = B[num][j - 1];
			}
			B[num][0] = tmp;
			break;
		case 'C':
			int tmp2 = B[H-1][num];
			for(int j = H - 1; j >= 1; j--){
				B[j][num] = B[j - 1][num];
			}
			B[0][num] = tmp2;
		}
	}
	String Output;
	if(B[0][0]==1){
		Output = "white";
	}else{
		Output = "black";
	}
	System.out.println(Output);
}	
}