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

# dp[i][j][k] := (i, j)にいて宝石k個持っているような経路の数
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):
            for di, dj in [(1, 0), (0, 1)]:
                ni, nj = i+di, j+dj
                if ni >= H or nj >= W:
                    continue
                if A[ni][nj] == "#":
                    continue

                if A[ni][nj] == 'o' and k < H+W-1:
                    dp[ni][nj][k+1] += dp[i][j][k]
                elif A[ni][nj] == 'x' and k > 0:
                    dp[ni][nj][k-1] += dp[i][j][k]

ans = 0
for k in range(H+W):
    ans += dp[H-1][W-1][k]
print(ans)