#pragma GCC optimize("Ofast")
#pragma GCC target("avx2")

char*mmap();
#define RD(v) int v=0;{int _c;while(_c=*rp++-48,_c>=0)v=v*10+_c;}

char s[1234567];
int k[1234567];

main(){
	char*rp=mmap(0l,1l<<28,1,2,0,0ll);
	RD(h);
	RD(w);
	RD(n);
	for(int i=0;i<n;++i){
		s[i]=*rp;
		rp+=2;
		RD(ki);
		k[i]=ki;
	}
	int x=0,y=0;
	for(int i=n;i--;){
		if(s[i]=='R'){
			if(y==k[i]&&--x<0){
				x=w-1;
			}
		}else{
			if(x==k[i]&&--y<0){
				y=h-1;
			}
		}
	}
	write(1,x+y&1?"black":"white",5);
	_exit(0);
}