from sys import stdin
def solve():
	IN = stdin.readlines()
	H,W = map(int,IN[0].split())
	N = int(IN[1])
	hx = hy = 0
	for i in xrange(N+1,1,-1):
		s,k = IN[i].split();
		k = int(k)
		if s == "R":
			if k == hy:
				hx = (hx - 1) % W
		else:
			if k == hx:
				hy = (hy - 1) % H
	print "white" if (hx + hy) % 2 == 0 else "black"
solve()