sean 要制作一种物品,他要先收集材料.制作该物品有两种方式,给出这两种方式所需 要的材料,sean 还没想好要用哪种方式,他现在只好搜集足够的材料确保两种制作方式都能 满足.请问他最少需要收集多少个材料?-sean To produce an article, and his first collection of materials, there are two ways to the production of the goods, given the materials nee