【Codeforces 547D】Mike and Fish
【Codeforces 555E】Case of Computer Network
【Codeforces 505E】Mr. Kitayuta vs. Bamboos
【洛谷P5787】【模板】线段树分治
【UOJ#207】共价大爷游长沙
【Codeforces 603E】Pastoral Oddities
【Codeforces 547E】Mike and Friends
【Codeforces 786E】ALT
【Codeforces 559E】Gerald and Path
【Codeforces 576D】Flights for Regular Customers
