C1733
After Ding Changsheng walked out of the painting store, he noticed that there was a car following his car. Ding Changsheng looked in the rearview mirror, but he couldn't see who was following him. The best way was to keep on turning and after a few turns, he would know if they were following him or not.
Therefore, Ding Changsheng turned left three times in a row. However
