#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
typedef unsigned long long ull;

int H,W;
vector<string> grid;

int solve(int y, int x, int jewel){
    int ans = 0;
    if(grid[y][x] == '#'){
        return 0;
    }
    if(grid[y][x] == 'o'){
        jewel++;
    }
    if(grid[y][x] == 'x'){
        jewel--;
        if(jewel<0){
            return 0;
        }
    }
    if(y == H-1 && x == W-1){
        return 1;
    }
    //下に行く
    if(y<H-1){
        ans += solve(y+1,x,jewel);
    }
    //右に行く
    if(x<W-1){
        ans += solve(y,x+1,jewel);
    }
    return ans;
}

int main(){
    cin >> H >> W;
    for(int i=0;i<H;i++){
        string s;
        cin >> s;
        grid.push_back(s);
    }
    int ans = solve(0,0,0);
    cout << ans << endl;
}