13.Shooting Rubber Band

• A rubber band may fly a longer distance if it is non-uniformly stretched when shot, giving it spin. Optimise the distance that a rubber band with spin can reach.
• 如果橡皮筋在射出时拉伸不均匀，从而产生旋转，那么它的飞行距离可能会更远。优化带有旋转的橡皮筋所能达到的距离