#include<iostream>
#include<cstdio>
#include<cstring>
#include<string>
#include<cctype>
#include<cstdlib>
#include<algorithm>
#include<bitset>
#include<cstdio>
#include<cstring>
#include<string>
#include<cctype>
#include<cstdlib>
#include<algorithm>
#include<bitset>
#include<vector>
#include<list>
#include<deque>
#include<queue>
#include<map>
#include<set>
#include<stack>
#include<cmath>
#include<sstream>
#include<fstream>
#include<iomanip>
#include<ctime>
#include<complex>
#include<functional>
#include<climits>
#include<cassert>
#include<iterator>
using namespace std;


int h;
int w;

char buf[3];

struct st{

	char s;
	int k;

	st(){
		scanf("%s%d", buf, &k);
		s = buf[0];
	}

};

vector<st> v;

int main(){
	cin >> h >> w;
	int n;
	cin >> n;
	for (int i = 0; i < n; i++){
		v.push_back(st());
	}
	reverse(v.begin(), v.end());
	int x = 0;
	int y = 0;
	for (int i = 0; i < v.size(); i++){
		if (v[i].s == 'R'&&v[i].k==x){
			y += w - 1;
			y %= w;
		}
		else{
			if (v[i].s == 'C'&&v[i].k == y){
				x += h - 1;
				x %= h;
			}
		}
	}
	int k = (x + y);
	k %= 2;
	if (k == 0){
		puts("white");
	}
	else{
		puts("black");
	}
	return 0;
}