500本金8码滚雪球算法

简介：It took more than an hour to clean up all the garbage and books left behind by the previous senior year of high school. In fact, they pushed them all to the corridor where the garbage was concentrated outside the classroom door, and then a large group of people from the first class carried it with them. All kinds of thick books came with a bang, not only the first class had to be moved, but all the classes in the original second grade of high school.