In a project, you have a list of required skills req_skills, and a list of people. The ith person people[i] contains a list of skills that the person has. Consider a sufficient team: a set of people such that for every required skill in req_skills, there…

You have an undirected, connected graph of n nodes labeled from 0 to n - 1. You are given an array graph where graph[i] is a list of all the nodes connected with node i by an edge. Return the length of the shortest path that visits every node. You may start…

给你一个 m * n 的矩阵 seats 表示教室中的座位分布。如果座位是坏的（不可用），就用 '#' 表示；否则，用 '.' 表示。 学生可以看到左侧、右侧、左上、右上这四个方向上紧邻他的学生的答卷，但是看不到直接坐在他前面或者后面的学生的答卷。请你计算并返回该考场可以容纳的同时参加考试且无法作弊的 最大 学生人数。 学生必须坐在状况良好的座位上。   示例 1： 输入：seats = [["#",".","#","#",".","#"],   [".","#","#","#","#","."],  …

给你两个整数 M 和 K，和一个整数数组 nums。

You are given two integers, m and k, and an integer array nums.

给你一个下标从 0 开始的字符串 s 和一个整数 k。 你需要执行以下分割操作，直到字符串 s 变为 空：