!7

p {
  int n = 1000000;
  S a = rep(n, 'a') + rep(n, 'b');
  S b = rep(n+10, 'a') + rep(n-10, 'b');
  int max = 100;
  while (true)
    time { print("max " + max + " => " + leven_limited(a, b, max)); }
}