lqybzx的专栏

Problem DescriptionAt the start of this game, there are N knights on a road of length N+1. The knights are numbered from 1 to N, and the ith knight stands i unit from the left end of the road.

Problem DescriptionMr. Chopsticks is interested in random phenomena, and he conducts an experiment to study randomness. In the experiment, he throws n balls into m boxes in such a manner that each

Description对于刚上大学的牛牛来说,他面临的第一个问题是如何根据实际情况申请合适的课程。在可以选择的课程中,有2n节课程安排在n个时间段上。在第i(1≤i≤n)个时间段上,两节内容相同的课程同时在不同的地点进行,其中,牛牛预先被安排在教室ci上课,而另一节课程在教室di进行。在不提交任何申请的情况下,学生们需要按时间段的顺序依次完成所有的n节安排好的课程。如果学生想更