摘要：
# [6447\. 给墙壁刷油漆](https://leetcode.cn/problems/painting-the-walls/description/) ## Description Difficulty: **困难** Related Topics: 给你两个长度为 `n` 下标从 **0* 阅读全文
摘要：
# [6893\. 特别的排列](https://leetcode.cn/problems/special-permutations/) ## Description Difficulty: **中等** Related Topics: 给你一个下标从 **0** 开始的整数数组 `nums` ，它 阅读全文