Obstacle Course Detection (Official trial)

We had two official trials. For the first tiral, we couldn't get a good score on the last part of the challenge. Since our robot didn't have a free port to include a missile shooting nor did we have a billiant idea to improve the last part, actually we deserved the bad score. However, Woosik and I dared to make another trial. The second trial was just fine before the last part. However, as the robot got closer to the finish line, it seemed to collide with the cans again. In fact, it eventually touch the cans slightly !! Therefore, I never expected a full score on this again. Nevertheless, when Mr. Inskeep asked the class if he should give us 9 or 10 for this, you guys kindly shouted '10' at the same time !! Thank you guys. I really appreciate your shouting(?) As a person who has finished the challenge though, please come up with a brilliant idea to avoid the cans. Depending on the luck like us is too risky...