import java.util.stream.*;
import java.util.*;
import java.io.*;

public class Main {
  public static void main(String[] args) throws java.lang.Exception {
    Set<Integer> vals = new HashSet<Integer>(Arrays.asList(1, 11, 1111111));
    long start = System.nanoTime();
    int[] result = IntStream.range(0, 100000000).filter(i -> vals.contains(i)).toArray();
    System.out.println(Arrays.toString(result) + ": " + (System.nanoTime() - start) / 1000000.0 + " msecs");
  }
}