import std.conv, std.functional, std.range, std.stdio, std.string;
import std.algorithm, std.array, std.bigint, std.bitmanip, std.complex, std.container, std.math, std.mathspecial, std.numeric, std.regex, std.typecons;
import core.bitop;

class EOFException : Throwable { this() { super("EOF"); } }
string[] tokens;
string readToken() { for (; tokens.empty; ) { if (stdin.eof) { throw new EOFException; } tokens = readln.split; } auto token = tokens.front; tokens.popFront; return token; }
int readInt() { return readToken.to!int; }
long readLong() { return readToken.to!long; }

string COLOR(string s = "") { return "\x1b[" ~ s ~ "m"; }

bool chmin(T)(ref T t, in T f) { if (t > f) { t = f; return true; } else { return false; } }
bool chmax(T)(ref T t, in T f) { if (t < f) { t = f; return true; } else { return false; } }

int binarySearch(alias pred, T)(in T[] as) { int lo = -1, hi = cast(int)(as.length); for (; lo + 1 < hi; ) { const mid = (lo + hi) >> 1; (unaryFun!pred(as[mid]) ? hi : lo) = mid; } return hi; }
int lowerBound(T)(in T[] as, T val) { return as.binarySearch!(a => (a >= val)); }
int upperBound(T)(in T[] as, T val) { return as.binarySearch!(a => (a > val)); }




void main() {
  try {
    for (; ; ) {
      const N = readInt;
      auto S = readToken;
      
      int[10] F;
      foreach (i; 0 .. N) {
        ++F[S[i] - '0'];
      }
      
      int[] ans;
      if (N == 1) {
        ans ~= (S[0] - '0');
      } else if (N == 2) {
        ans ~= ((S[0] - '0') * 10 + (S[1] - '0')) % 40;
        ans ~= ((S[1] - '0') * 10 + (S[0] - '0')) % 40;
      } else {
        foreach (a; 0 .. 10) if (F[a]) {
          --F[a];
          foreach (b; 0 .. 10) if (F[b]) {
            --F[b];
            foreach (c; 0 .. 10) if (F[c]) {
              --F[c];
              ans ~= (100*a + 10*b + c) % 40;
              ++F[c];
            }
            ++F[b];
          }
          ++F[a];
        }
      }
      ans = ans.sort.uniq.array;
      debug {
        writeln("ans = ", ans);
      }
      writeln(ans.length);
    }
  } catch (EOFException e) {
  }
}