A brand new store has just opened that sells Husbands. When women go to choose a husband, they have to follow the instructions at the entrance: You may visit this store ONLY ONCE! There are 6 floors and the value of the products increase as you ascend the flights. You may choose any item from a particular floor, or may choose to go up to the next floor, but you CANNOT go back down except to exit the building.

　　一家出售老公的商店全新开张了。女士们进去选择老公时，必须遵守写在门口的注意事项：你只能光临本店一次！ 本店共有六层，店内商品的质量随楼层升高而提高。你可以在任何一层选择任意商品，你也可以选择登上下一层，但是，你不能往回走，除非你要离开商店。