using System;

public class Hello
{
    static void Main()
    {
        var n = int.Parse(Console.ReadLine().Trim());
        var s = new string[n];
        for (int i = 0; i < n; i++) s[i] = Console.ReadLine().Trim();
        getAns(n, s);
    }
    static void getAns(int n, string[] s)
    {
        var ans = 0;
        for (int i = 0; i < n; i++)
        {
            var ca = 0;
            var cd = 0;
            foreach (var x in s[i])
                if (x == 'A') ca++;
                else if (x == '.') cd++;
            if (ca == n - 1 && cd == 1) ans++;
        }
        for (int i = 0; i < n; i++)
        {
            var ca = 0;
            var cd = 0;
            for (int j = 0; j < n; j++)
            {
                if (s[j][i] == 'A') ca++;
                else if (s[j][i] == '.') cd++;
            }
            if (ca == n - 1 && cd == 1) ans++;
        }
        var ca2 = 0;
        var cd2 = 0;
        var ca3 = 0;
        var cd3 = 0;
        for (int i = 0; i < n; i++)
        {
            if (s[i][i] == 'A') ca2++;
            else if (s[i][i] == '.') cd2++;
            if (s[i][n - 1 - i] == 'A') ca3++;
            else if (s[i][n - 1 - i] == '.') cd3++;
        }
        if (ca2 == n - 1 && cd2 == 1) ans++;
        if (ca3 == n - 1 && cd3 == 1) ans++;
        Console.WriteLine(ans);
    }
}