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在某大楼里,从一楼到十楼,每层楼的电梯门口都会放着一颗钻石,但大小不一。有位女士在一楼乘电梯到十楼,每到一层楼,电梯的门都会打开一次。从头至尾,这位女士只能拿一次钻石,她怎样才能拿到最大的一颗?
In a building, from the first floor to the tenth floor, each floor of the elevator door will be placed a diamond, but different sizes. A lady on the first floor by elevator to the tenth floor, each floor, the elevator door will open once. From start to finish, the lady can only get a diamond, how can she get the biggest one?