3885. 设计事件管理器
Medium | Array, Hash Table, Design, Heap (Priority Queue), Ordered Set
Hash Table
3889. 镜像频率距离
Medium | Hash Table, String, Counting
3890. 具有两个立方和的多重表示的整数
Medium | Hash Table, Sorting, Counting, Enumeration
2963. 统计好分割方案的数目
Hard | Array, Hash Table, Math, Combinatorics
2965. 找出缺失和重复的数字
Easy | Array, Hash Table, Math, Matrix
2975. 通过移除栅栏获得的最大正方形面积
Medium | Array, Hash Table, Enumeration
2981. 找出至少出现三次的最长特殊子字符串 I
Medium | Hash Table, String, Binary Search, Sliding Window, Counting
2982. 找出出现至少三次的最长特殊子字符串 II
Medium | Hash Table, String, Binary Search, Sliding Window, Counting
2983. 回文重新排列查询
Hard | Array, Hash Table, String, Prefix Sum
2996. 大于序列前缀和的最小缺失整数
Easy | Array, Hash Table, Sorting