#include "bits/stdc++.h"
using namespace std;
#define ll long long int
#define rep(i,n) for( int i = 0; i < n; i++ )
#define rrep(i,n) for( int i = n; i >= 0; i-- )
#define REP(i,s,t) for( int i = s; i <= t; i++ )
#define RREP(i,s,t) for( int i = s; i >= t; i-- )
#define dump(x)  cerr << #x << " = " << (x) << endl;
#define INF 2000000000
#define mod 1000000007
#define INF2 1000000000000000000
char S[1000010];
int R[1000010];

int main(void)
{
    cin.tie(0);
    ios::sync_with_stdio(false);
	int H, W;
	cin >> H >> W;
	int N; 
	cin >> N;
	rep(i, N) {
		cin >> S[i] >> R[i];
	}
	int x = 0, y = 0;
	RREP(i, N - 1, 0) {
		//cout << x << " " << y << endl;
		if (S[i] == 'R' && R[i] == y) {
			x--;
		}
		else if (S[i] == 'C' && R[i] == x) {
			y--;
		}
		x = (x + W) % W;
		y = (y + H) % H;
	}
	if ((x + y) % 2 == 0) {
		cout << "white" << endl;
	}
	else {
		cout << "black" << endl;
	}


    return 0;
}