#include<bits/stdc++.h>
using namespace std;
using Int = long long;

struct FastIO{
  FastIO(){
    cin.tie(0);
    ios::sync_with_stdio(0);
  }
}fastio_beet;

//INSERT ABOVE HERE
signed main(){
  Int h,w,n;
  cin>>h>>w>>n;
  vector<char> s(n);
  vector<Int> k(n);
  for(Int i=0;i<n;i++) cin>>s[i]>>k[i];

  reverse(s.begin(),s.end());
  reverse(k.begin(),k.end());
  Int y=0,x=0;
  for(Int i=0;i<n;i++){
    if(s[i]=='R'&&y==k[i]) x=(x+w-1)%w;
    if(s[i]=='C'&&x==k[i]) y=(y+h-1)%h;
  }

  cout<<((x+y)&1?"black":"white")<<endl;
  return 0;
}