剑不飞

摘要： Starship TroopersTime Limit: 10000/5000 MS (Java/Others) Memory Limit: 65536/32768 K (Java/Others)Total Submission(s): 6276 Accepted Submission(s): 1692Problem DescriptionYou, the leader of Starship Troopers, are sent to destroy a base of the bugs. The base is built underground. It is actually a hug 阅读全文

摘要： Quoit DesignTime Limit: 10000/5000 MS (Java/Others) Memory Limit: 65536/32768 K (Java/Others)Total Submission(s): 17773 Accepted Submission(s): 4563Problem DescriptionHave you ever played quoit in a playground? Quoit is a game in which flat rings are pitched at some toys, with all the toys encircled 阅读全文

摘要： Shopping OffersIOI'95 In a certain shop, each kind of product has an integer price. For example, the price of a flower is 2 zorkmids (z) and the price of a vase is 5z. In order to attract more customers, the shop introduces some special offers.A special offer consists of one or more product item 阅读全文

摘要： NTATime Limit: 2 Seconds Memory Limit: 65536 KB The NTA (Non-deterministic Tree Automata) is a kind of tree structure device. The device is built in a set of operating rules. With these rules the device can produce several signals, which will form a signal system. In such a system, one signal is the 阅读全文

摘要： Riding the FencesFarmer John owns a large number of fences that must be repaired annually. He traverses the fences by riding a horse along each and every one of them (and nowhere else) and fixing the broken parts.Farmer John is as lazy as the next farmer and hates to ride the same fence twice. Your 阅读全文

摘要： Safe Or UnsafeTime Limit: 2000/1000 MS (Java/Others) Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 863 Accepted Submission(s): 309Problem DescriptionJavac++ 一天在看计算机的书籍的时候，看到了一个有趣的东西！每一串字符都可以被编码成一些数字来储存信息，但是不同的编码方式得到的储存空间是不一样的！并且当储存空间大于一定的值的时候是不安全的！所以Javac++ 就想是否有一种方式是可以得到字符编码最小的空间值！显 阅读全文

摘要： Sweet ButterGreg Galperin -- 2001Farmer John has discovered the secret to making the sweetest butter in all of Wisconsin: sugar. By placing a sugar cube out in the pastures, he knows the N (1 #include #include #include using namespace std; ifstream cin("butter.in"); ofstream cout("but 阅读全文

摘要： Magic SquaresIOI'96 Following the success of the magic cube, Mr. Rubik invented its planar version, called magic squares. This is a sheet composed of 8 equal-sized squares:12348765In this task we consider the version where each square has a different color. Colors are denoted by the first 8 posi 阅读全文

摘要： Feed Ratios1998 ACM Finals, Dan Adkins Farmer John feeds his cows only the finest mixture of cow food, which has three components: Barley, Oats, and Wheat. While he knows the precise mixture of these easily mixable grains, he can not buy that mixture! He buys three other mixtures of the three grains 阅读全文

摘要： Spinning Wheels1998 ACM NE Regionals Each of five opaque spinning wheels has one or more wedges cut out of its edges. These wedges must be aligned quickly and correctly. Each wheel also has an alignment mark (at 0 degrees) so that the wheels can all be started in a known position. Wheels rotate in t 阅读全文