北区以北的博客

POJ2828 Buy Tickets http://poj.org/problem?id=2828 Description Railway tickets were difficult to buy around the Lunar New Year in China, so we must get up early and join a long queue… The Lunar...

Count Color http://poj.org/problem?id=2777 Description Chosen Problem Solving and Program design as an optional course, you are required to solve all kinds of problems. Here, we get a new prob...

Corporate Identity http://poj.org/problem?id=3450 Description Beside other services, ACM helps companies to clearly state their “corporate identity”, which includes company logo but also other...