import java.util.Scanner;

public class Test {
	public static Scanner sc = new Scanner(System.in);

	public static void main(String[] args) {
		int h = sc.nextInt(), w = sc.nextInt(), n = sc.nextInt();
		int x = 0, y = 0;
		int[] m = new int[n];
		char[] c = new char[n];
		for(int i = 0; i < n; i++){
			c[i] = sc.next().charAt(0);
			m[i] = sc.nextInt();
		}
		for(int i = n-1; i >= 0; i--){
			if(y == m[i] && c[i] == 'R'){
				x--;
				if(x < 0){
					x += w;
				}
			} else if(x == m[i] && c[i] == 'C'){
				y--;
				if(y < 0){
					y += h;
				}
			}
		}
		if((x + y) % 2 == 0){
			System.out.println("white");
		} else {
			System.out.println("black");
		}
	}
}