H,W = map(int, input().split())

A = [list(input()) for i in range(H)]
dp = [[[0]*W for i in range(H)] for j in range(100)]
dp[1][0][0] = 1
for h in range(H):
    for w in range(W):
        for je in reversed(range(100)):
            if h == 0 and w == 0:
                continue


            if A[h][w] == "o":
                tmp = 1

            elif A[h][w] == "x":
                tmp = -1

            else:
                continue


            if 0<=je-tmp<100:
                if h>0:   
                    dp[je][h][w] += dp[je-tmp][h-1][w]
                if w>0:
                    dp[je][h][w] += dp[je-tmp][h][w-1]
ans = 0
for k in range(100):
    ans += dp[k][-1][-1]
print(ans)