H,W = map(int,raw_input().split())
N = int(raw_input())
S = ['' for i in range(N)]
K = [0 for i in range(N)]
for i in range(N):
	s,k = raw_input().split()
	k = int(k)
	S[i],K[i] = s,k
R = 0
C = 0
for i in range(N - 1,-1,-1):
	if S[i] == 'R':
		if K[i] == R:
			if C == 0:
				C = W - 1
			else:
				C -= 1
	else:
		if K[i] == C:
			if R == 0:
				R = H - 1
			else:
				R -= 1
if (R + C) % 2 == 0:
	print 'white'
else:
	print 'black'