h, w = map(int, input().split())
d = h + w
dp = [[[0] * d for _ in range(w)] for _ in range(h)]
dp[0][0][0] = 1
a = [input() for _ in range(h)]
for i in range(h):
    for j in range(w):
        if a[i][j] == '#':
            continue
        if a[i][j] == 'o':
            dp[i][j].insert(0, 0)
        else:
            dp[i][j].pop(0)
        for k, val in enumerate(dp[i][j]):
            if not val:
                continue
            if i + 1 < h:
                dp[i+1][j][k] += val
            if j + 1 < w:
                dp[i][j+1][k] += val
print(sum(dp[h-1][w-1]))