from collections import Counter

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

DP=[[Counter() for j in range(W)] for i in range(H)]
DP[0][0][1]=1

for i in range(H):
    for j in range(W):
        for c in DP[i][j]:
            p=DP[i][j][c]
            if i+1<H and A[i+1][j]=="o":
                DP[i+1][j][c+1]+=p

            if i+1<H and A[i+1][j]=="x" and c-1>=0:
                DP[i+1][j][c-1]+=p

            if j+1<W and A[i][j+1]=="o":
                DP[i][j+1][c+1]+=p

            if j+1<H and A[i][j+1]=="x" and c-1>=0:
                DP[i][j+1][c-1]+=p

ANS=0
for i in DP[-1][-1]:
    ANS+=DP[-1][-1][i]

print(ANS)