====== 2020 Multi University Training Contest 6 ====== [[https://vjudge.net/contest/390427|比赛链接]] ===== A - Road To The 3rd Building ===== Solved by . ==== 题目描述 ==== ==== 解题思路 ==== ===== 赛后总结 ===== ==== nikkukun ==== ==== qxforever ==== ==== Potassium ====