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摘要： Mirror and LightTime Limit: 2000/1000 MS (Java/Others)Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 650Accepted Submission(s): 316Problem DescriptionThe light travels in a straight line and always goes in the minimal path between two points, are the basic laws of optics.Now, our prob 阅读全文

摘要： 爆头Time Limit: 2000/1000 MS (Java/Others)Memory Limit: 65536/32768 K (Java/Others)Total Submission(s): 1447Accepted Submission(s): 601Problem Descriptiongameboy是一个CS高手，他最喜欢的就是扮演警察，手持M4爆土匪的头。也许这里有人没玩过CS，有必要介绍一下“爆头”这个术语：所谓爆头，就是子弹直接命中对方的头部，以秒杀敌人。现在用一个三维的直角坐标系来描述游戏中的三维空间（水平面为xoy平面，z轴正方向是上方）。假设游戏中角色的头是一个标 阅读全文

摘要： WallTime Limit: 2000/1000 MS (Java/Others)Memory Limit: 65536/32768 K (Java/Others)Total Submission(s): 2848Accepted Submission(s): 811Problem DescriptionOnce upon a time there was a greedy King who ordered his chief Architect to build a wall around the King's castle. The King was so greedy, tha 阅读全文

摘要： You can Solve a Geometry Problem tooTime Limit: 2000/1000 MS (Java/Others)Memory Limit: 65536/32768 K (Java/Others)Total Submission(s): 6425Accepted Submission(s): 3099Problem DescriptionMany geometry（几何）problems were designed in the ACM/ICPC. And now, I also prepare a geometry problem for this fina 阅读全文

摘要： Cupid's ArrowTime Limit: 3000/1000 MS (Java/Others)Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 849Accepted Submission(s): 306Problem Description传说世上有一支丘比特的箭，凡是被这支箭射到的人，就会深深的爱上射箭的人。世上无数人都曾经梦想得到这支箭。Lele当然也不例外。不过他想，在得到这支箭前，他总得先学会射箭。日子一天天地过，Lele的箭术也越来越强，渐渐得，他不再满足于去射那圆形的靶子，他开始设计各种各样 阅读全文

摘要： Lifting the StoneTime Limit: 2000/1000 MS (Java/Others)Memory Limit: 65536/32768 K (Java/Others)Total Submission(s): 4819Accepted Submission(s): 2006Problem DescriptionThere are many secret openings in the floor which are covered by a big heavy stone. When the stone is lifted up, a special mechanism 阅读全文

摘要： Jack StrawsTime Limit:1000MSMemory Limit:10000KTotal Submissions:2911Accepted:1322DescriptionIn the game of Jack Straws, a number of plastic or wooden "straws" are dumped on the table and players try to remove them one-by-one without disturbing the other straws. Here, we are only concerned 阅读全文

摘要： 改革春风吹满地Time Limit: 2000/1000 MS (Java/Others)Memory Limit: 65536/32768 K (Java/Others)Total Submission(s): 16308Accepted Submission(s): 8316Problem Description“ 改革春风吹满地,不会AC没关系;实在不行回老家，还有一亩三分地。谢谢!（乐队奏乐）”话说部分学生心态极好，每天就知道游戏，这次考试如此简单的题目，也是云里雾里，而且，还竟然来这么几句打油诗。好呀，老师的责任就是帮你解决问题，既然想种田，那就分你一块。这块田位于浙江省温州市苍南县 阅读全文

摘要： HerdingTime Limit: 2000/1000 MS (Java/Others)Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 1125Accepted Submission(s): 325Problem DescriptionLittle John is herding his father's cattles. As a lazy boy, he cannot tolerate chasing the cattles all the time to avoid unnecessary omissi 阅读全文

摘要： WarcraftTime Limit: 2000/1000 MS (Java/Others)Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 957Accepted Submission(s): 487Problem DescriptionHave you ever played the Warcraft?It doesn't matter whether you have played it !We will give you such an experience.There are so many Heroe 阅读全文