#include <bits/stdc++.h>
using namespace std;
#define FOR(i,m,n) for(int i=(m);i<(n);++i)
#define REP(i,n) FOR(i,0,n)
using ll = long long;
constexpr int INF = 0x3f3f3f3f;
constexpr long long LINF = 0x3f3f3f3f3f3f3f3fLL;
constexpr double EPS = 1e-8;
constexpr int MOD = 998244353;
// constexpr int MOD = 1000000007;
constexpr int DY4[]{1, 0, -1, 0}, DX4[]{0, -1, 0, 1};
constexpr int DY8[]{1, 1, 0, -1, -1, -1, 0, 1};
constexpr int DX8[]{0, -1, -1, -1, 0, 1, 1, 1};
template <typename T, typename U>
inline bool chmax(T& a, U b) { return a < b ? (a = b, true) : false; }
template <typename T, typename U>
inline bool chmin(T& a, U b) { return a > b ? (a = b, true) : false; }
struct IOSetup {
  IOSetup() {
    std::cin.tie(nullptr);
    std::ios_base::sync_with_stdio(false);
    std::cout << fixed << setprecision(20);
  }
} iosetup;

int main() {
  constexpr int M = 120;
  int n; string s; cin >> n >> s;
  set<int> ans;
  if (n == 2) {
    ans.emplace(stoi(s));
    swap(s.front(), s.back());
    ans.emplace(stoi(s));
  } else if (n >= 3) {
    constexpr int D = 10;
    array<int, D> num{};
    for (const char c : s) ++num[c - '0'];
    REP(i, D) REP(j, D) REP(k, D) {
      --num[i];
      --num[j];
      --num[k];
      if (num[i] >= 0 && num[j] >= 0 && num[k] >= 0) {
        int md = i * D + j;
        REP(d, D) md = (md + num[d] * d * 40) % M;
        ans.emplace(md);
      }
      ++num[i];
      ++num[j];
      ++num[k];
    }
  }
  cout << ans.size() << '\n';
  return 0;
}