#include<bits/stdc++.h>
#define int long long
using namespace std;
const int N=1000010;
int n,m,q;
string op[N];
int id[N];
void solve(){
	cin>>n>>m>>q;
	for(int i=1;i<=q;i++){
		cin>>op[i];
		cin>>id[i];
	}
	int idx=0,idy=0;
	for(int i=q;i>=1;i--){
		if(op[i]=="R"&&id[i]==idx)idy=(idy-1+m)%m;
		if(op[i]=="C"&&id[i]==idy)idx=(idx-1+n)%n;
	}
	if(idx%2==idy%2)cout<<"white\n";
	else cout<<"black\n";
	return;
}
signed main(){
//	freopen("puzzle.in","r",stdin);
//	freopen("puzzle.out","w",stdout);
	int T=1;
//	cin>>T;
	while(T--)solve(); 
	return 0;
}