LeetCode 3513. Number of Unique XOR Triplets I
biweekly contest 154。 有點 codeforces 味道的構造題。
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LeetCode 3512. Minimum Operations to Make Array Sum Divisible by K
biweekly contest 154。
LeetCode 3510. Minimum Pair Removal to Sort Array II
weekly contest 444。
LeetCode 3509. Maximum Product of Subsequences With an Alternating Sum Equal to K
weekly contest 444。 複雜度也很怪的題，還真沒想到怎麼做。
LeetCode 3508. Implement Router
weekly contest 444。