摘要：
http://codeforces.com/gym/101341/problem/B ProblemB. Pursuing the HappinessInput file: standard inputOutput file: standard outputTime limit: 2 seconds 阅读全文
摘要：
http://codeforces.com/gym/101341/problem/D A frog lives in a one-dimensional world in the point with the coordinate 0. He needs to get to the point wi 阅读全文