#include <iostream>
#include <cstdio>
#include <vector>

using namespace std;

int main() {
	int h, w, n;
	cin >> h >> w >> n;

	vector<char> s(n);
	vector<int> k(n);
	for (int i = 0; i < n; i++) {
		cin >> s[i] >> k[i];
	}

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

	cout << ((x + y) % 2 == 0 ? "white" : "black") << endl;
	return 0;
}