#include <iostream>
#include <vector>
#include <cstdio>
#include <sstream>
#include <map>
#include <string>
#include <algorithm>
#include <queue>
#include <cmath>
#include <functional>
#include <set>
#include <ctime>
#include <random>
#include <chrono>
using namespace std;

template<class T> istream& operator >> (istream& is, vector<T>& vec){for(T& val: vec) is >> val; return is;}
template<class T> istream& operator ,  (istream& is, T& val){ return is >> val;}
template<class T> ostream& operator << (ostream& os, const vector<T>& vec){for(int i=0; i<vec.size(); i++) os << vec[i] << (i==vec.size()-1?"":" "); return os;}
template<class T> ostream& operator ,  (ostream& os, const T& val){ return os << " " << val;}
template<class T> ostream& operator >> (ostream& os, const T& val){ return os << " " << val;}

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 r = 0;
	int c = 0;
	for(int i=n-1; i>=0; i--){
		if(S[i] == "R"){
			if(K[i]==r){
				c = (c-1+w)%w;
			}
		}else if(S[i] == "C"){
			if(K[i]==c){
				r = (r-1+h)%h;
			}
		}else{
			cout << "unko" << endl;
		}
	}

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