H,W = map(int,raw_input().split())
N = int(raw_input())
tile = [[(i + j) % 2 for j in range(W)]for i in range(H)]
for i in range(N):
	S,K = raw_input().split()
	K = int(K)
	if S == 'R':
		right = tile[K][W - 1]
		for c in range(1,W):
			tile[K][c] = tile[K][c - 1]
		tile[K][0] = right
	else:
		bottom = tile[H - 1][K]
		for r in range(1,H):
			tile[r][K] = tile[r - 1][K]
		tile[0][K] = bottom
if tile[0][0] == 0:
	print 'white'
else:
	print 'black'