Occult

Problem Description当太阳的光辉逐渐被月亮遮蔽，世界失去了光明，大地迎来最黑暗的时刻。。。。在这样的时刻，人们却异常兴奋——我们能在有生之年看到500年一遇的世界奇观，那是多么幸福的事儿啊~~但网路上总有那么些网站，开始借着民众的好奇心，打着介绍日食的旗号，大肆传播病毒。小t不幸成为受害者之一。小t如此生气，他决定要把世界上所有带病毒的网站都找出来。当然，谁都知道这是

Problem DescriptionDanganronpa is a video game franchise created and developed by Spike Chunsoft, the series' name is compounded from the Japanese words for "bullet" (dangan) and "refutation" (ron

DescriptionLosanto has a sequence {a[1],a[2],…,a[n]} with n positive integers. Superman has some positive integer sequences with different size. Losanto wants to know the total occurrences of ever

Problem DescriptionThe finite state automaton (FSA) is an important model of behavioral investigations in computer science, linguistics and many other areas. A FSA can be typically modeled as a st

Problem DescriptionGreat! Your new software is almost finished! The only thing left to do is archiving all your n resource files into a big one.Wait a minute… you realized that it isn’t as easy

Problem DescriptionCould you imaging a monkey writing computer programs? Surely monkeys are smart among animals. But their limited intelligence is no match for our human beings. However, there is

Problem DescriptionLiyuan lives in a old apartment. One day, he suddenly found that there was a wireless network in the building. Liyuan did not know the password of the network, but he got some i

Problem DescriptionLost and AekdyCoin are friends. They always play "number game"(A boring game based on number theory) together. We all know that AekdyCoin is the man called "nuclear weapon of FZ

DescriptionZplinti1 is given a big and long string , together with a list of strings that are viruses. He wants to find the number of substrings of , so that it does not contain any viruses. S

Problem DescriptionIn the modern time, Search engine came into the life of everybody like Google, Baidu, etc.Wiskey also wants to bring this feature to his image retrieval system.Every image h

Problem Description    Aliens on planet Pandora also write computer programs like us. Their programs only consist of capital letters (‘A’ to ‘Z’) which they learned from the Earth. On planet Pan