#include <iostream>
using namespace std;
int main(void){
    // Here your code !
    int h, w;
    cin >> h >> w;
    bool isWhite[h][w];
    for (int i = 0; i < h; i++) {
        for (int j = 0; j < w; j++) {
            isWhite[i][j] = ((i+j)&1) == 0;
        }
    }
    int n;
    cin >> n;
    cin.ignore();
    bool tempC[h], tempR[w];
    for (int i = 0; i < n; i++) {
        char ch;
        int line;
        cin >> ch >> line;
        cin.ignore();
        if (ch == 'C') {
            for (int j = 0; j < h; j++) {
                tempC[j] = isWhite[j][line];
            }
            for (int j = 0; j < h; j++) {
                isWhite[(j+1)%h][line] = tempC[j];
            }
        } else {
            for (int j = 0; j < w; j++) {
                tempR[j] = isWhite[line][j];
            }
            for (int j = 0; j < w; j++) {
                isWhite[line][(j+1)%w] = tempR[j];
            }
        }
    }
    cout << (isWhite[0][0] ? "white" : "black") << endl;
    return 0;
}