BOSON+CODE:
博客地址:https://www.cnblogs.com/boson-is-god/
BOSON+CODE:
博客地址:https://www.cnblogs.com/boson-is-god/
http://codeforces.com/contest/741/problem/B B. Arpa's weak amphitheater and Mehrdad's valuab
http://codeforces.com/contest/776/problem/G