H, W = map(int, input().split())
A = [list(input()) for _ in range(H)]

def dfs(h, w, c):
    cnt = 0
    if h == H-1 and w == W-1:
        return 1
    if A[h][w] == "o":
        c += 1
    elif A[h][w] == "x":
        c -= 1
    if h < H-1 and A[h+1][w] != "#" and (c >= 1 or A[h+1][w] != "x"):
        cnt += dfs(h+1, w, c)
    if w < W-1 and A[h][w+1] != "#" and (c >= 1 or A[h][w+1] != "x"):
        cnt += dfs(h, w+1, c)
    return cnt

print(dfs(0, 0, 0))