message: proper elapsed time calc
diff: @@ -60,6 +60,7 @@ fn main() {
  let now = std::time::Instant::now();
  let tree = prepare_tree(&long_vec);
  + let elapsed = now.elapsed();
  println!("Tree final root: {}-{}",
  tree.root_node().expect("root").data().start_height,
  @@ -68,6 +69,6 @@ fn main() {
  println!("Prepare tree of {} length: {} ns / {} mcs / {} ms",
  number,
  - now.elapsed().as_nanos(), now.elapsed().as_micros(), now.elapsed().as_millis()
  + elapsed.as_nanos(), elapsed.as_micros(), elapsed.as_millis()
  );
  }
  