using System;

namespace y
{
    class Program
    {
        static void Main(string[] args)
        {
            string[] ss = Console.ReadLine().Split();
            int h = int.Parse(ss[0]);
            int w = int.Parse(ss[1]);
            int n = int.Parse(Console.ReadLine());


            string[] a = new string[n];
            for (int i = 0; i < n; i++)
            {
                a[i] = Console.ReadLine();
            }

            int x = 0, y = h - 1;
            for (int i = n - 1; i >= 0; i--)
            {
                ss = a[i].Split();
                if (ss[0] == "R" && (h - 1) - int.Parse(ss[1]) == y)
                {
                    x = x - 1;
                    if (x < 0) x = w - 1;
                }
                if (ss[0] == "C" && int.Parse(ss[1]) == x)
                {
                    y = y + 1;
                    if (y > h - 1) y = 0;
                }
            }
            string ans = "";
            if (x % 2 == 1)
            {
                ans = y % 2 == 0 ? "white" : "black";
            }
            else
            {
                ans = y % 2 == 1 ? "white" : "black";
            }

            if (h % 2 == 1)
            {
                if (ans == "black") ans = "white";
                else ans = "black";
            }

            Console.WriteLine(ans);
        }
    }
}