#include <bits/stdc++.h>
using namespace std;
int main(){
	int h,w;	cin>>h>>w;
	int n;	cin>>n;
	vector<string> s(n);
	vector<int> k(n);
	for(int i=0;i<n;i++)	cin>>s[i]>>k[i];
	int cury=0,curx=0;
	for(int i=n-1;i>=0;i--){
		if(s[i]=="C"&&k[i]==curx){
			cury=(cury+h-1)%h;
		}
		else if(s[i]=="R"&&k[i]==cury){
			curx=(curx+w-1)%w;
		}
	}
	if((curx+cury)%2==0)	cout<<"white"<<endl;
	else 	cout<<"black"<<endl;
	return 0;
}