#include <bits/stdc++.h>
using ll=long long;
const long long INF=1LL<<60;
ll h,w;
int main(){
    std::cin >> h >> w;
    std::vector<std::vector<char>>A(h,std::vector<char>(w));
    for(auto&row:A){
        for(auto&a:row)std::cin >> a;
    }
    std::vector<std::vector<std::vector<ll>>>dp(h,std::vector<std::vector<ll>>(w,std::vector<ll>(120)));
    dp[0][0][1]=1;
    for(int i=0;i<h;++i){
        for(int j=0;j<w;++j){
            if(i==0&&j==0)continue;
            if(A[i][j]=='#')continue;
            for(int v=0;v<120;++v){
                int nv=v;
                if(A[i][j]=='o')++nv;
                else --nv;
                if(nv<0)continue;
                if(i!=0){
                    dp[i][j][nv]+=dp[i-1][j][v];
                }
                if(j!=0){
                    dp[i][j][nv]+=dp[i][j-1][v];
                }
            }
        }
    }
    ll ans=0;
    for(int i=0;i<120;++i)ans+=dp.back().back()[i];
    std::cout << ans << '\n';
}