// JavaでTLE叩き出して恥ずかしい。

import java.util.ArrayList;
import java.util.List;
import java.util.Scanner;

public class Main {
	public static void main(String[] args) throws Exception {
		Scanner sc = new Scanner(System.in);
		int h = sc.nextInt();
		int w = sc.nextInt();

		int x = 0;
		int y = 0;

		List<SK> list = new ArrayList<>();
		int n = sc.nextInt();
		for (int i = 0; i < n; i++) {
			String s = sc.next();
			int k = sc.nextInt();
			SK sk = new SK(s, k);
			list.add(sk);
		}

		for (int i = list.size() - 1; i >= 0; i--) {
			SK sk = list.get(i);
			String s = sk.s;
			int k = sk.k;
			if ("R".equals(s) && k == y) {
				x--;
				if (x < 0) x = w - 1;
			} else if ("C".equals(s) && k == x) {
				y--;
				if (y < 0) y = h - 1;
			}
		}

		System.out.println((x + y) % 2 == 0 ? "white" : "black");
	}
}

class SK {
	final String s;
	final int k;

	SK(String s, int k) {
		this.s = s;
		this.k = k;
	}
}