zdragon

摘要： You are given an integer array of length nn. You have to choose some subsequence of this array of maximum length such that this subsequence forms a in 阅读全文

摘要： Genos recently installed the game Zuma on his phone. In Zuma there exists a line of n gemstones, the i-th of which has color ci. The goal of the game 阅读全文

摘要： Charlie is a driver of Advanced Cargo Movement, Ltd. Charlie drives a lot and so he often buys coffee at coffee vending machines at motorests. Charlie 阅读全文

摘要： Description Emma and Eric are moving to their new house they bought after returning from their honeymoon. Fortunately, they have a few friends helping 阅读全文

摘要： 描述 HaHa is so happy today, he is going to participate the 7th Hunan University Programming Contest. He woke up in the morning, and wanted to reach Hun 阅读全文

摘要： Problem Description ACboy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算出要获得尽量多的 阅读全文

摘要： There is going to be a party to celebrate the 80-th Anniversary of the Ural State University. The University has a hierarchical structure of employees 阅读全文

摘要： A school bought the first computer some time ago(so this computer's id is 1). During the recent years the school bought N-1 new computers. Each new co 阅读全文

摘要： 描述 JAVAMAN is visiting Dream City and he sees a yard of gold coin trees. There are n trees in the yard. Let's call them tree 1, tree 2 ...and tree n. 阅读全文

摘要： 描述 Seller: That will be fourteen dollars. Buyer: Here's a twenty. Seller: Sorry, I don't have any change. Buyer: OK, here's a ten and a five. Keep the 阅读全文