#include "bits/stdc++.h"
using namespace std;
#define fastcin {\
    cin.tie(0);\
    ios::sync_with_stdio(false);\
}
#define rep(i, a, b) for(int i = a; i < b; i++)
#define rrep(i, a, b) for(int i = a; i >= b; i--)
#define fore(i, a) for(auto &i:a)
#define print(x) cout << x << "\n"
#define SORT(a, n) sort(a, a+n);
#define REVERSE(a,n) reverse(a,a+n);
#define VSORT(v) sort(v.begin(), v.end());
#define VREVERSE(v) reverse(v.begin(), v.end());
#define MOD 1000000007
#define yes "YES"
#define no "NO"
typedef long long ll;
typedef vector<int> vi;
typedef vector<vi> vvi;
typedef vector<ll> vll;

int h, w, n;
int main() {
    fastcin;
    cin >> h >> w >> n;
    char s;
    int k, x = 0, y = 0;
    vector<pair<char, int> > vp;
    rep(i, 0, n) {
        cin >> s >> k;
        vp.push_back(make_pair(s, k));
    }
    rrep(i, n-1, 0) {
        s = vp[i].first;
        k = vp[i].second;
        if(s=='R' && k==y) {
            x--;
            if(x<0) x = w-1;
        } else if(s=='C' && k==x) {
            y--;
            if(y<0) y = h-1;
        }
    }
    string ans = "white";
    if((x+y)%2) ans = "black";
    printf("%s\n", ans.c_str());
    return 0;
}