#include <iostream>

using namespace std;

int main() {
    cin.tie(0);
    ios::sync_with_stdio(false);
    int n,h,w,k,a = 0,b = 0;
    char c;
    cin >> h >> w;
    cin >> n;
    for(int i = 0; i < n; i++) {
        cin >> c >> k;
        if (c == 'R') {
            b = (b + 1) % w;
        } else {
            a = (a + 1) % h;
        }
    }
    if ((a * w + b) % 2 == 0) {
        cout << "white" << "\n";
    } else {
        cout << "black" << "\n";
    }
    return 0;
}