Suppose you get three identical boats of the same type and you are asked to do several rounds of testing to find out how many bricks a boat of this type can carry at most. Assume that you know the answer can be from one brick to one hundred bricks. For each round of testing, you may load any number of bricks on a boat, and if it is over the limit that the boat can carry, the boat will sink immediately. You have to give the answer of the maximum number of bricks that can be carried by a boat of this type once you sink all your three boats. What is the best strategy to find the answer by doing as few rounds of testing as possible.