#include <bits/stdc++.h>
using namespace std;

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

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

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

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