LeetCode 3243. Shortest Distance After Road Addition Queries I
weekly contest 409。
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LeetCode 3242. Design Neighbor Sum Service
weekly contest 409。 好久沒看到設計題。
LeetCode 3241. Time Taken to Mark All Nodes
biweekly contest 136。 個人覺得比 Q3 還簡單一些。
LeetCode 3240. Minimum Number of Flips to Make Binary Grid Palindromic II
biweekly contest 136。 和前一題類似，但是難度上升不少。
LeetCode 3239. Minimum Number of Flips to Make Binary Grid Palindromic I
biweekly contest 136。