#include <bits/stdc++.h>
#define REP(i,n,N) for(int i=(n);i<(int)N;i++)
#define p(s) cout<<(s)<<endl
using namespace std;

int main(){
	int H,W,N;
	cin>>H>>W>>N;
	char S[1000010];
	int K[1000010];
	REP(i,0,N) cin>>S[i]>>K[i];
	int x,y;
	for(int i=N-1;i>=0; 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;
	}
	p((x+y)%2?"black":"white");
	return 0;
}