「最小値の最大化」は二分探索！の知られざる罠……【ゆっくり解説】

[@mridu299]

Hi, I couldn't solve green or cyan question. My atcoder profile is killua123. How to reach 1200+ ratings?

[@AngrySadEight]

I suppose it will be effective to practice solving ABC-D and ABC-E (in order to become able to solve during the contest time, speed is also important). If you become able to solve ABC-E at a rate of 50%, you can probably reach 1200+ rating.