摘要:
C++ has always had the convenient data structures std::set and std::map, which are tree data structures whose operations take \(O(\log n)\) time. With 阅读全文
摘要:
Hi Codeforces! In Round 507 earlier today, a large number of "mostly correct" randomized solutions on 1039B - Subway Pursuit were hacked. I wanted to 阅读全文