勇敢的炮灰

摘要： 点击打开链接Currency ExchangeTime Limit:1000MSMemory Limit:30000KTotal Submissions:16635Accepted:5821DescriptionSeveral currency exchange points are working in our city. Let us suppose that each point specializes in two particular currencies and performs exchange operations only with these currencies. The 阅读全文

摘要： 点击打开链接Crashing RobotsTime Limit:1000MSMemory Limit:65536KTotal Submissions:6655Accepted:2886DescriptionIn a modernized warehouse, robots are used to fetch the goods. Careful planning is needed to ensure that the robots reach their destinations without crashing into each other. Of course, all warehou 阅读全文

摘要： 点击打开链接玛雅历Time Limit:1000MSMemory Limit:10000KTotal Submissions:60232Accepted:18571Description上周末，M.A. Ya教授对古老的玛雅有了一个重大发现。从一个古老的节绳（玛雅人用于记事的工具）中，教授发现玛雅人使用了一个一年有365天的叫做Haab的历法。这个Haab历法拥有19个月，在开始的18个月，一个月有20天，月份的名字分别是pop, no, zip, zotz, tzec, xul, yoxkin, mol, chen, yax, zac, ceh, mac, kankin, muan, pax 阅读全文