#include <algorithm>
#include <cfloat>
#include <climits>
#include <cmath>
#include <complex>
#include <cstdio>
#include <cstdlib>
#include <cstring>
#include <functional>
#include <iostream>
#include <map>
#include <memory>
#include <queue>
#include <deque>
#include <set>
#include <sstream>
#include <stack>
#include <string>
#include <utility>
#include <vector>
#include <cassert>
 
using namespace std;
 
#define sz size()
#define pb push_back
#define mp make_pair
#define fi first
#define se second
#define all(c) (c).begin(), (c).end()
#define rep(i,a,b) for(long long i=(a);i<(b);++i)
#define clr(a, b) memset((a), (b) ,sizeof(a))
 
#define MOD 1000000007

int main(){
  int h,w;
  int n;
  cin>>h>>w;
  cin>>n;
  vector<pair<string,int> > v;
  rep(i,0,n){
    string s;
    int a;
    cin>>s>>a;
    v.pb(mp(s,a));
  }
  reverse(all(v));
  int x=0, y=0;
  rep(i,0,v.sz){
    if(v[i].fi=="R"&&v[i].se==y){
      x+=w;x--;x%=w;
    }
    else if(v[i].fi=="C"&&v[i].se==x){
      y+=h;y--;y%=h;
    }
  }
  if((x+y)%2==0)cout << "white" << endl;
  else cout << "black" << endl;
  return 0;
}