#include <bits/stdc++.h>
using namespace std;
#define all(v) (v).begin(),(v).end()
#define pb(a) push_back(a)
#define rep(i, n) for(int i=0;i<n;i++)
#define foa(e, v) for(auto&& e : v)
using ll = long long;
const ll MOD7 = 1000000007, MOD998 = 998244353, INF = (1LL << 60);
#define dout(a) cout<<fixed<<setprecision(10)<<a<<endl;

int main() {
    cin.tie(0);
    ios::sync_with_stdio(false);
    ll h, w;
    cin >> h >> w;
    vector<string> s(h);
    rep(i, h) cin >> s[i];
    vector dp(h, vector(w, vector(22, 0LL)));
    for(int i = 0; i < h; i ++) {
        for(int j = 0; j < w; j ++) {
            vector<ll> tmp(22, 0LL);
            if(i == 0 and j == 0) tmp[0] ++;
            for(int k = 0; k < 22; k ++) {
                if(i) tmp[k] += dp[i - 1][j][k];
                if(j) tmp[k] += dp[i][j - 1][k];
            }
            if(s[i][j] == '#') continue;
            if(s[i][j] == 'o') {
                for(int k = 0; k < 21; k ++) {
                    dp[i][j][k + 1] += tmp[k];
                }
            } else {
                for(int k = 1; k < 22; k ++) {
                    dp[i][j][k - 1] += tmp[k];
                }
            }
        }
    }
    ll ans = 0;
    for(int i = 0; i < 22; i ++) ans += dp[h - 1][w - 1][i];
    cout << ans << endl;
    return 0;
}