#include<iostream>
using namespace std;
const int BUF = 1000005;

int row, col;
int nRcIdx;
char rc[BUF];
int idx[BUF];

void read() {
    cin >> row >> col;
    cin >> nRcIdx;
    for (int i = 0; i < nRcIdx; ++i) {
        cin >> rc[i] >> idx[i];
    }
}


void work() {
    int r = 0;
    int c = 0;
    for (int i = nRcIdx - 1; i >= 0; --i) {
        if (rc[i] == 'R' && r == idx[i]) {
            c = (c + col - 1) % col;
        }
        else if (rc[i] == 'C' && c == idx[i]) {
            r = (r + row - 1) % row;
        }
    }
    cout << ((r + c) % 2 == 0 ? "white" : "black") << endl;
}


int main() {
    read();
    work();
    return 0;
}