LeetCode 3394. Check if Grid can be Cut into Sections
biweekly contest 146。
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LeetCode 3393. Count Paths With the Given XOR Value
biweekly contest 146。
LeetCode 3392. Count Subarrays of Length Three With a Condition
biweekly contest 146。
LeetCode 3399. Smallest Substring With Identical Characters II
weekly contest 429。
LeetCode 3398. Smallest Substring With Identical Characters I
weekly contest 429。 Q3 和 Q4 答案通用，而且不算太難，但我犯了兩個錯誤：