#include "bits/stdc++.h"
#define _CRT_SECURE_NO_WARNINGS
#define rep(i,n) for(int i = 0;i < n;i++)
#define REP(i,n,k) for(int i = n;i < k;i++)
#define P(p) cout << (p) << endl;
#define sP(p) cout << setprecision(15) << fixed << p << endl;
#define Pi pair<int,int>
#define IINF 1e9
#define LINF 1e18
#define vi vector<int>
#define mp make_pair
#define pb push_back

using namespace std;
typedef long long ll;
typedef unsigned long long ull;
int dx[] = { 0, 1, 0, -1 };
int dy[] = { -1, 0, 1, 0 };

unsigned long long sttoi(std::string str) {
	unsigned long long ret;
	std::stringstream ss; ss << str;
	ss >> ret;
	return ret;
}

ull gcd(ull a, ull b) {
	if (b > a)swap(a, b);
	if (b == 0) return a;
	return gcd(b, a%b);
}

void solve() {
	int h, w, n;
	cin >> h >> w >> n;
	vector<pair<char, int> > v;
	rep(i, n) {
		char a;
		int b;
		cin >> a >> b;
		v.push_back(mp(a, b));
	}
	int c = 0, r = 0;
	for (int i = n - 1; i >= 0; i--) {
		if (v[i].first == 'R' && v[i].second == r) {
			c = (c == 0 ? w - 1 : c - 1) % w;
		}
		else if(v[i].first == 'C' && v[i].second == c){
			r = (r == 0 ? h - 1 : r - 1) % h;
		}
	}
	if ((r + c) % 2 == 0) {
		P("white");
	}
	else {
		P("black");
	}
}	

int main() {
	solve();
	return 0;
}