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

class Program
{
    static int NN => int.Parse(ReadLine());

    public static void Main()
    {
        Solve();
    }
    static void Solve()
    {
        var n = NN;
        var s = ReadLine();
        if (n == 1)
        {
            WriteLine(1);
            return;
        }
        var count = new int[10];
        foreach (var si in s) ++count[si - '0'];
        var set = new HashSet<int>();
        for (var i = 1; i < 10; ++i)
        {
            if (count[i] == 0) continue;
            --count[i];
            for (var j = 1; j < 10; ++j)
            {
                if (count[j] == 0) continue;
                --count[j];
                var tmp = 0;
                var evens = 0;
                var odds = 0;
                for (var c = 1; c < 10; ++c)
                {
                    for (var p = 0; p < count[c]; ++p) tmp = (tmp * 10 + c) % 120;
                    if (count[c] > 0)
                    {
                        if (c % 2 == 0) ++evens;
                        else ++odds;
                    }
                }
                tmp = (tmp * 100 + i * 10 + j) % 120;
                set.Add(tmp);
                if (evens > 0 && odds > 0) set.Add((tmp + 60) % 120);
                ++count[j];
            }
            ++count[i];
        }
        WriteLine(set.Count);
    }
}