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

int main() {
    cin.tie(0); ios::sync_with_stdio(false);
    
    int H, W; cin >> H >> W;
    int N; cin >> N;
    char S[N];
    int K[N];
    
    for (int i=0; i<N; i++) cin >> S[i] >> K[i];
    
    int nx=0, ny=0;
    
    for (int i=N-1; i>=0; i--) {
        if (S[i]=='R' && K[i]==nx) {
            if (ny==0) ny = W-1;
            else ny -= 1;
        }
        else if (S[i]=='C' && K[i]==ny) {
            if (nx==0) nx = H-1;
            else nx -= 1;
        }
    }
    
    if ((nx+ny)%2==0) cout << "white" << endl;
    else cout << "black" << endl;
}