h, w = map(int, input().split())
a = [list(input()) for _ in range(h)]

dp = [[[0] * (h + w) for _ in range(w)] for _ in range(h)]
dp[0][0][1] = 1

for i in range(h):
	for j in range(w):
		for k in range(h + w):
			if i < h - 1:
				if a[i + 1][j] == 'o' and k < h + w - 1:
					dp[i + 1][j][k + 1] += dp[i][j][k]
				if a[i + 1][j] == 'x' and k > 0:
					dp[i + 1][j][k - 1] += dp[i][j][k]
			if j < w - 1:
				if a[i][j + 1] == 'o' and k < h + w - 1:
					dp[i][j + 1][k + 1] += dp[i][j][k]
				if a[i][j + 1] == 'x' and k > 0:
					dp[i][j + 1][k - 1] += dp[i][j][k]

print(sum(dp[h - 1][w - 1]))