import sys
input = sys.stdin.readline
H, W = map(int, input().split())
A = [input().strip() for _ in range(H)]
dp = [[[0 for _ in range(H+W+1)] 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+1):
            if dp[i][j][k]==0:
                continue
            if j+1<W and A[i][j+1]!="#":
                nk = k + (1 if A[i][j+1]=="o" else -1)
                if nk>=0:
                    dp[i][j+1][nk] += dp[i][j][k]
            if i+1<H and A[i+1][j]!="#":
                nk = k + (1 if A[i+1][j]=="o" else -1)
                if nk>=0:
                    dp[i+1][j][nk] += dp[i][j][k]
ans = 0
for d in dp[-1][-1]:
    ans += d
print(ans)