#nullable enable

#region
var (_input, _iter) = (Array.Empty<string>(), 0);
T I<T>() where T : IParsable<T>
{
    while (_iter >= _input.Length) (_input, _iter) = (Console.ReadLine()!.Trim().Split(' '), 0);
    return T.Parse(_input[_iter++], null);
}
#endregion

static T[] Range<T>(int n, Func<T> F) => Enumerable.Range(0, n).Select(_ => F()).ToArray();

var n = I<int>();
var sz = Range(n, I<string>);

var nn = n + n;
var ans = 0L;
var cz = new int[n];
for (var i = 0; i < n; i++)
{
    var s = sz[i];
    var next = 0;
    for (var j = 0; j < nn; j++)
    {
        if (s[j] == '#') continue;
        ans += j - next;
        next++;
        cz[i]++;
    }
}
{
    var stock = 0;
    foreach (var c in cz)
    {
        var d = c - n;
        ans += d * (d - 1) / 2;
        stock += d;
        ans += Math.Abs(stock);
    }
}
Console.WriteLine(ans);