H,W = map(int,raw_input().split())
N = int(raw_input())
SK = [raw_input().split() for i in xrange(N)]
hx = hy = 0
for i in xrange(N-1,-1,-1):
	s,k = SK[i]
	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"