Cargo Delivery Challenge

In this challenge, the robot has 30 seconds to place the 5 blue bricks on top of the three different towers. You get 1 point for each one in the red tower, 2 points for each one on the green one, and 4 points for each one on the yellow tower. You also get an additional 5 bonus points if you can get all 5 bricks onto the towers in less than 30 seconds. You can get up to 25 points in this challenge. You are allowed to pick up pieces that have fallen