#include <bits/stdc++.h>
#define rep(i,n) for(int i = 0; i < (n); ++i)
#define srep(i,s,t) for (int i = s; i < t; ++i)
#define drep(i,n) for(int i = (n)-1; i >= 0; --i)
using namespace std;
typedef long long int ll;
typedef pair<int,int> P;
#define yn {puts("white");}else{puts("black");}
#define MAX_N 200005

int main() {
    int h, w;
    cin >> h >> w;
    int n;
    cin >> n;
    char c[n], k[n];
    rep(i,n)cin >> c[i] >> k[i];
    int x = 0, y = 0;
    drep(i,n){
        if(c[i] == 'R' && k[i] == x){
            if(y == 0){
                y = w - 1;
            }else{
                y--;
            }
        }
        if(c[i] == 'C' && k[i] == y){
            if(x == 0){
                x = h - 1;
            }else{
                x--;
            }
        }
    }
    if((x+y)%2==0)yn;
    return 0;
}