#MMA Contest 018 C

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

#DP[h][w][c]: A[h][w]に到達し、進入処理を終えた後、宝石をc個所持
DP = [[[0] * (H + W + 1) for w in range(W)] for h in range(H)]
DP[0][0][1] = 1
for h in range(H):
    for w in range(W):
        for c in range(H + W + 1):
            for x, y in [(h + 1, w), (h, w + 1)]:
                if x not in range(H) or y not in range(W):
                    continue
                if A[x][y] == '#':
                    continue
                if A[x][y] == 'o':
                    if c < H + W:
                        DP[x][y][c + 1] += DP[h][w][c]
                if A[x][y] == 'x':
                    if c > 0:
                        DP[x][y][c - 1] += DP[h][w][c]

print(sum(DP[-1][-1][c] for c in range(H + W + 1)))