#include<iostream>
#include<string>
#include<algorithm>
#include<cctype>
#include<set>
#include<bitset>
#include<math.h>
#include<map>
#include<queue>
#include<iomanip>
using namespace std;
using ll = long long;

int main()
{
    int h, w, n, x = 0, y = 0;
    cin >> h >> w >> n;
    vector<pair<char, int>> v(n);
    for (int i = 0; i < n; i++) cin >> v[i].first >> v[i].second;
    for (int i = n-1; i >= 0; i--){
        if (v[i].first == 'R' && y == v[i].second) x = (x+w-1)%w;
        else if (v[i].first == 'C' && x == v[i].second) y = (y+h-1)%h;
    }
    cout << (((x+y)%2) ? "black" : "white") << endl;
}