#include <iostream>

using namespace std;

int main() {
    cin.tie(0);
    ios::sync_with_stdio(false);
    int n,h,w,k[1000000],a = 0,b = 0;
    char c[1000000];
    cin >> h >> w;
    cin >> n;
    for(int i = 0; i < n; i++) {
        cin >> c[i] >> k[i];
    }
    for(int i = n - 1; i >= 0; i--) {
        if (c[i] == 'R' && k[i] == a) {
            b = (b + w - 1) % w;
        } else if (c[i] == 'C' && k[i] == b) {
            a = (a + h - 1) % h;
        }
    }
    if ((a + b) % 2 == 0) {
        cout << "white" << "\n";
    } else {
        cout << "black" << "\n";
    }
    return 0;
}