#include<bits/stdc++.h>
#define rep(i,a,b) for(int i=int(a);i<int(b);++i)
using namespace std;
typedef long long ll;
int INF = (1LL << 30) - 1;
int MOD = 1e9+7;
main(){
    int H,W,N;
    cin >> H >> W >> N;
    vector<char> S(N);
    vector<int> K(N);
    rep(i,0,N){
        cin >> S[i] >> K[i];
    }
    int x = 0, y = 0;
    rep(i,0,N){
        int j = N - i - 1;
        if(S[j] == 'C' && K[j] == x){
            y = (y - 1 + H) % H;
        }
        if(S[j] == 'R' && K[j] == y){
            x = (x - 1 + W) % W;
        }
    }
    //cout << y << " " << x << endl;
    cout << ( (x + y) % 2 ? "black" : "white" )<< endl;
}