3789. 获取所需物品的最小成本
Medium | Math, Greedy
Math
3790. 最小全1倍数
Medium | Hash Table, Math
3805. 计算凯撒密码对数
Medium | Array, Hash Table, Math, String, Counting
3821. 寻找第N个有K个1的最小整数
Hard | Math, Bit Manipulation, Combinatorics
3828. 子数组删除后的最终元素
Medium | Array, Math, Brainteaser, Game Theory
3848. 检查数字阶乘排列
Medium | Math, Counting
3850. 计算到达K的序列数
Hard | Array, Math, Dynamic Programming, Memoization, Number Theory
3855. 范围内K位数字的和
Hard | Math, Divide and Conquer, Combinatorics, Number Theory
3857. 分解为1的最小代价
Medium | Math, Dynamic Programming
3867. 构成配对的最大公约数之和
Medium | Array, Math, Two Pointers, Simulation, Number Theory