#include <bits/stdc++.h>
using namespace std;

#define rep(i,n) for (int i=0;i<(n);i++)
#define rep2(i,a,b) for (int i=(a);i<(b);i++)
#define rrep(i,n) for (int i=(n)-1;i>=0;i--)
#define rrep2(i,a,b) for (int i=(b)-1;i>=(a);i--)
#define all(a) (a).begin(),(a).end()

typedef long long ll;
typedef pair<int, int> P;
typedef vector<int> vi;
typedef vector<P> vp;
typedef vector<ll> vll;

int H, W;
int N;
char q[1000010];
int a[1000010];

signed main() {
    std::ios::sync_with_stdio(false);
    std::cin.tie(0);

    cin >> H >> W;
    cin >> N;
    rep(i, N) {
        cin >> q[i] >> a[i];
    }

    int r = 0, c = 0;
    rrep(i, N) {
        if (q[i] == 'R' && a[i] == r) {
            c = (c + W - 1) % W;
        } else if (q[i] == 'C' && a[i] == c) {
            r = (r + H - 1) % H;
        }
    }
    if ((r + c) % 2 == 0) {
        printf("white\n");
    } else {
        printf("black\n");
    }
}