#include <bits/stdc++.h>
using namespace std;
using namespace chrono;
#if __has_include(<atcoder/all>)
#include <atcoder/all>
using namespace atcoder;
#endif

int main()
{
    const auto start = steady_clock::now();

    random_device rnd;
    mt19937 engine(rnd());

    int64_t n;
    string s;
    cin >> n >> s;

    set<int64_t> st;

    while (duration_cast<milliseconds>(steady_clock::now() - start).count() < 1900)
    {
        if (st.size() == 10)
        {
            break;
        }

        // ranges::shuffle(s, engine);
        shuffle(s.begin(), s.end(), engine);

        st.insert(stoll(s.substr(n - 3, 3)) % 40);
    }

    cout << st.size() << endl;

    return 0;
}