static int levenSimilarityIntIC_multi(S a, Cl<S> b) {
  if (empty(b)) ret 0;
  new Lowest<S> bestRelDiff; // 0 to 1
  for (S key : b) {
    int n = max(l(a), l(key));
    if (!bestRelDiff.has())
      bestRelDiff.put(key, doubleRatio(levenIC(a, key), n));
    else {
      int limit = iceil(bestRelDiff.score*n);
      int diff = leven_limitedIC(a, key, limit);
      double percentDiff = doubleRatio(diff*100, n);
      bestRelDiff.put(key, doubleRatio(diff, n));
    }
  }
  ret iround((1-bestRelDiff.score)*100);
}