#include <stdio.h>

#define MAX 1000000

int h, w, n, k[MAX];
char s[MAX];

int main(void) {
	scanf("%d%d%d", &h, &w, &n);
	int i;
	for(i = 0; i < n; i++) { scanf("%*c%c%d", &s[i], &k[i]); }
	
	int hh = 0, ww = 0;
	for(i = n - 1; 0 <= i; i--) {
		if(s[i] == 'R' && k[i] == hh) { ww = (ww + (w - 1)) % w; }
		if(s[i] == 'C' && k[i] == ww) { hh = (hh + (h - 1)) % h; }
	}
	
	printf("%s\n", (hh + ww) % 2 == 0 ? "white" : "black");
	
	return 0;
}