#include <bits/stdc++.h>
#define rep(i,n) for(int i = 0; i < (n); i++)
using namespace std;
typedef long long ll;

int main(){
    cin.tie(0);
    ios::sync_with_stdio(0);
    
    int H,W,N; cin >> H >> W >> N;
    vector<pair<char,int>> query(N);
    for(auto &[s, t] : query) cin >> s >> t;
    reverse(query.begin(), query.end());

    int i = 0, j = 0;
    for(auto [s, t] : query) {
        if(s == 'C' && t == j) {
            i = (i - 1 + H) % H;
        } else if(t == i) {
            j = (j - 1 + W) % W;
        }
    }

    cout << ((i + j) % 2 == 0 ? "white" : "black") << endl;
}