import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.PrintStream;
import java.io.PrintWriter;
import java.util.Arrays;
import java.util.Iterator;


public class Main_yukicoder351 {

    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        Printer pr = new Printer(System.out);

        int h = sc.nextInt();
        int w = sc.nextInt();
        int n = sc.nextInt();

        char[] s = new char[n];
        int[] k = new int[n];
        for (int i = 0; i < n; i++) {
        	s[i] = sc.next().toCharArray()[0];
        	k[i] = sc.nextInt();
        }

        int x = 0;
        int y = 0;
        for (int i = n - 1; i >= 0; i--) {
        	if (s[i] == 'R' && y == k[i]) {
        		x = (x - 1 + w) % w;
        	} else if (s[i] == 'C' && x == k[i]) {
        		y = (y - 1 + h) % h;
        	}
        }

        if ((x + y) % 2 == 0) {
        	pr.println("white");
        } else {
        	pr.println("black");
        }

        pr.close();
        sc.close();
    }

	@SuppressWarnings("unused")
	private static class Scanner {
		BufferedReader br;
		Iterator<String> it;

		Scanner (InputStream in) {
			br = new BufferedReader(new InputStreamReader(in));
		}

		String next() throws RuntimeException  {
			try {
				if (it == null || !it.hasNext()) {
					it = Arrays.asList(br.readLine().split(" ")).iterator();
				}
				return it.next();
			} catch (IOException e) {
				throw new IllegalStateException();
			}
		}

		int nextInt() throws RuntimeException {
			return Integer.parseInt(next());
		}

		long nextLong() throws RuntimeException {
			return Long.parseLong(next());
		}

		float nextFloat() throws RuntimeException {
			return Float.parseFloat(next());
		}

		double nextDouble() throws RuntimeException {
			return Double.parseDouble(next());
		}

		void close() {
			try {
				br.close();
			} catch (IOException e) {
//				throw new IllegalStateException();
			}
		}
	}

	private static class Printer extends PrintWriter {
		Printer(PrintStream out) {
			super(out);
		}
	}
}