#include <bits/stdc++.h>
#define FOR(i,a,b) for(int i = (a); i < (b); ++i)
#define REP(i,n) FOR(i,0,n)
#define RREP(i,n) for(int i = (n) - 1; (i) >= 0; --i)
#define SZ(n) (int)(n).size()
#define ALL(n) (n).begin(), (n).end()
#define MOD LL(1e9 + 7)
#define INF 1000000
using namespace std;
typedef long long LL;
typedef vector<int> VI;
typedef pair<int, int> PI;

char c[10001];
int l[10001];

int main() {
	int h, w, n;
	cin >> h >> w >> n;
	REP(i, n)
		cin >> c[i] >> l[i];
	int x = 0;
	int y = 0;
	RREP(i, n) {
		if (c[i] == 'R' && l[i] == y)
			x = (x + w - 1) % w;
		else if(c[i] == 'C' && l[i] == x)
			y = (y + h - 1) % h;
	}
	if ((x + y) % 2)
		cout << "black" << endl;
	else
		cout << "white" << endl;
	return 0;
}