摘要：The Windy's Description The Windy's is a world famous toy factory that owns M top-class workshop to make toys. This year the manager receives N orders 阅读全文

摘要：Young naturalist Bill studies ants in school. His ants feed on plant-louses that live on apple trees. Each ant colony needs its own apple tree to feed 阅读全文

摘要：Last year a terrible earthquake attacked Sichuan province. About 300,000 PLA soldiers attended the rescue, also ALPCs. Our mission is to solve difficu 阅读全文

摘要：There is a kind of special fish in the East Lake where is closed to campus of Wuhan University. It’s hard to say which gender of those fish are, becau 阅读全文

摘要：There are N cities in our country, and M one-way roads connecting them. Now Little Tom wants to make several cyclic tours, which satisfy that, each cy 阅读全文

摘要：Jimmy invents an interesting card game. There are N cards, each of which contains a string Si. Jimmy wants to stick them into several circles, and eac 阅读全文

摘要：On a grid map there are n little men and n houses. In each unit time, every little man can move one unit step, either horizontally, or vertically, to 阅读全文

摘要：传说在遥远的地方有一个非常富裕的村落,有一天,村长决定进行制度改革：重新分配房子。 这可是一件大事,关系到人民的住房问题啊。村里共有n间房间,刚好有n家老百姓,考虑到每家都要有房住（如果有老百姓没房子住的话，容易引起不安定因素），每家必须分配到一间房子且只能得到一间房子。 另一方面,村长和另外的村领 阅读全文

摘要：You are given a 2D board where in some cells there are gold. You want to fill the board with 2 x 1 dominoes such that all gold are covered. You may us 阅读全文

摘要：You run a marriage media. You take some profiles for men and women, and your task is to arrange as much marriages as you can. But after reading their 阅读全文

摘要：Bessie wants to navigate her spaceship through a dangerous asteroid field in the shape of an N x N grid (1 <= N <= 500). The grid contains K asteroids 阅读全文

摘要：Consider a town where all the streets are one-way and each street leads from one intersection to another. It is also known that starting from an inter 阅读全文

摘要：Consider a group of N students and P courses. Each student visits zero, one or more than one courses. Your task is to determine whether it is possible 阅读全文

摘要：Give you a matrix(only contains 0 or 1),every time you can select a row or a column and delete all the '1' in this row or this column . Your task is t 阅读全文

摘要：As we all know, machine scheduling is a very classical problem in computer science and has been studied for a very long history. Scheduling problems d 阅读全文

摘要：the second year of the university somebody started a study on the romantic relations between the students. The relation “romantically involved” is def 阅读全文

摘要：过山车Time Limit: 1000/1000 MS (Java/Others) Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 23353 Accepted Submission(s): 10128Probl... 阅读全文