摘要： Simpsons’ Hidden TalentsTime Limit: 2000/1000 MS (Java/Others)Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 939Accepted Submission(s): 321Problem DescriptionHomer: Marge, I just figured out a way to discover some of the talents we weren’t aware we had.Marge: Yeah, what is it?Homer: T 阅读全文

摘要： Cyclic NacklaceTime Limit: 2000/1000 MS (Java/Others)Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 1255Accepted Submission(s): 538Problem DescriptionCC always becomes very depressed at the end of this month, he has checked his credit card yesterday, without any surprise, there are on 阅读全文

摘要： Count the stringTime Limit: 2000/1000 MS (Java/Others)Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 2191Accepted Submission(s): 1038Problem DescriptionIt is well known that AekdyCoin is good at string problems as well as number theory problems. When given a string s, we can write dow 阅读全文

摘要： Information DisturbingTime Limit: 6000/3000 MS (Java/Others)Memory Limit: 131072/65536 K (Java/Others)Total Submission(s): 844Accepted Submission(s): 304Problem DescriptionIn the battlefield , an effective way to defeat enemies is to break their communication system.The information department told y 阅读全文

摘要： GeoDefenseTime Limit: 12000/5000 MS (Java/Others)Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 347Accepted Submission(s): 138Problem DescriptionTower defense is a kind of real-time strategy computer games. The goal of tower defense games is to try to stop enemies from reaching your b 阅读全文

摘要： Find Metal MineralTime Limit: 2000/1000 MS (Java/Others)Memory Limit: 65768/65768 K (Java/Others)Total Submission(s): 1441Accepted Submission(s): 631Problem DescriptionHumans have discovered a kind of new metal mineral on Mars which are distributed in point‐like with paths connecting each of them wh 阅读全文

摘要： The more, The BetterTime Limit: 6000/2000 MS (Java/Others)Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 3149Accepted Submission(s): 1857Problem DescriptionACboy很喜欢玩一种战略游戏，在一个地图上，有N座城堡，每座城堡都有一定的宝物，在每次游戏中ACboy允许攻克M个城堡并获得里面的宝物。但由于地理位置原因，有些城堡不能直接攻克，要攻克这些城堡必须先攻克其他某一个特定的城堡。你能帮ACboy算出要获得尽量多 阅读全文

摘要： 悼念512汶川大地震遇难同胞——珍惜现在，感恩生活Time Limit: 1000/1000 MS (Java/Others)Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 7531Accepted Submission(s): 3108Problem Description急！灾区的食物依然短缺！为了挽救灾区同胞的生命，心系灾区同胞的你准备自己采购一些粮食支援灾区，现在假设你一共有资金n元，而市场有m种大米，每种大米都是袋装产品，其价格不等，并且只能整袋购买。请问：你用有限的资金最多能采购多少公斤粮食呢？后记：人生是 阅读全文

摘要： 从放暑假前周sir给我讲了一个用polya计数法和burnside定理做的题目（pku2409）后，突然觉得组合数学挺有意思，然后从那时起到现在几乎都在做这类的题目。做到现在感觉这类题目的一些基本知识点都差不多有所了解了，水题也刷了不少，但还有很多难题自己实在是做不动，所以准备把这类题目先放一放，然后把前段时间做的水题整理一下（供以后的初学者参考，大牛就不要看了哈，都是水题）。剩下的比较难的题目就慢慢来吧，以后做出来再不上，这个小结会不断地更新。也希望大家有好的题目可以推荐一下，分享一下哈。感谢：周sir，J_factory和福州大学神牛aekdycoin，大连理工大学神牛czyuan。不扯了 阅读全文

摘要： Starship TroopersTime Limit: 10000/5000 MS (Java/Others)Memory Limit: 65536/32768 K (Java/Others)Total Submission(s): 5726Accepted Submission(s): 1529Problem DescriptionYou, the leader of Starship Troopers, are sent to destroy a base of the bugs. The base is built underground. It is actually a huge 阅读全文