3621. 具有 Popcount-Depth 等于 K 的整数数量 I
Hard | Math, Dynamic Programming, Bit Manipulation, Combinatorics
Combinatorics
3725. 从行中选择互质整数的方案数
Hard | Array, Math, Dynamic Programming, Matrix, Combinatorics, Number Theory
3757. 有效子序列的数量
Hard | Array, Math, Dynamic Programming, Bit Manipulation, Combinatorics
3821. 寻找第N个有K个1的最小整数
Hard | Math, Bit Manipulation, Combinatorics
3855. 范围内K位数字的和
Hard | Math, Divide and Conquer, Combinatorics, Number Theory
3881. 有确切K个可见人的方向分配
Medium | Math, Combinatorics
2963. 统计好分割方案的数目
Hard | Array, Hash Table, Math, Combinatorics
3116. 单一面额组合的第K小金额
Hard | Array, Math, Binary Search, Bit Manipulation, Combinatorics, Number Theory
3128. 直角三角形
Medium | Array, Hash Table, Math, Combinatorics, Counting
3154. 寻找到达第K级台阶的方案数
Hard | Math, Dynamic Programming, Bit Manipulation, Memoization, Combinatorics
3179. 找出第 K 秒后的第 N 个值
Medium | Array, Math, Simulation, Combinatorics, Prefix Sum
2842. 具有最大美丽值的字符串的 K 子序列数量
Hard | Hash Table, Math, String, Greedy, Sorting, Combinatorics
2928. 在儿童中分发糖果 I
Easy | Math, Combinatorics, Enumeration
2929. 在孩子们之间分发糖果 II
Medium | Math, Combinatorics, Enumeration
2930. 可以重新排列得到子字符串的字符串数目
Medium | Math, Dynamic Programming, Combinatorics
2954. 感染序列的数目
Hard | Array, Math, Combinatorics
2063. 所有子串的元音数量
Medium | Math, String, Dynamic Programming, Combinatorics
2221. 数组的三角和
Medium | Array, Math, Simulation, Combinatorics, Number Theory
2514. 统计字母异位词数目
Hard | Hash Table, Math, String, Combinatorics, Counting
2597. 美丽子集的数目
Medium | Array, Hash Table, Math, Dynamic Programming, Backtracking, Sorting, Combinatorics