H, W = map(int, input().split())
world = []
for i in range(H):
    world.append(list(e for e in input()))
# print(world)

chash = dict()


def how_much(h, w, state):
    global H, W, chash, world
    if h == H & w == W:
        return 1
    if h > H or w > W:
        return 0
    if world[h - 1][w - 1] == "#":
        return 0
    if world[h - 1][w - 1] == "o":
        state += 1
    if world[h - 1][w - 1] == "x":
        state -= 1
    if state <= -1:
        return 0
    # print(how_much(h + 1, w) + how_much(h, w + 1))
    if (h, w) not in chash.keys():
        chash["x:{},y:{}".format(h, w)] = how_much(h + 1, w, state) + how_much(
            h, w + 1, state
        )
    return chash["x:{},y:{}".format(h, w)]


# print(chash)
print(how_much(1, 1, 0))