using System;
using static System.Console;
using System.Linq;
using System.Collections.Generic;

class Program
{
    static int NN => int.Parse(ReadLine());
    static int[] NList => ReadLine().Split().Select(int.Parse).ToArray();
    static string[] SList(long n) => Enumerable.Repeat(0, (int)n).Select(_ => ReadLine()).ToArray();
    public static void Main()
    {
        Solve();
    }
    static void Solve()
    {
        var c = NList;
        var (h, w) = (c[0], c[1]);
        var map = SList(h);
        var dp = new int[h, w, 21];
        dp[0, 0, 1] = 1;
        for (var i = 0; i < h; ++i) for (var j = 0; j < w; ++j) for (var k = 0; k < 21; ++k)
        {
            if (i + 1 < h)
            {
                if (map[i + 1][j] == 'o' && k + 1 < 21) dp[i + 1, j, k + 1] += dp[i, j, k];
                else if (map[i + 1][j] == 'x' && k > 0) dp[i + 1, j, k - 1] += dp[i, j, k];
            }
            if (j + 1 < w)
            {
                if (map[i][j + 1] == 'o' && k + 1 < 21) dp[i, j + 1, k + 1] += dp[i, j, k];
                else if (map[i][j + 1] == 'x' && k > 0) dp[i, j + 1, k - 1] += dp[i, j, k];
            }
        }
        var ans = 0;
        for (var i = 0; i < 21; ++i) ans += dp[h - 1, w - 1, i];
        WriteLine(ans);
    }
}