摘要：
minimum-number-of-people-to-teach https://leetcode-cn.com/problems/minimum-number-of-people-to-teach/ 一开始感觉像是并查集，，，，但是感觉也没有办法冰茶，，，，， 贪心算法:先找出所有没有共同语言的 阅读全文
摘要：
https://leetcode-cn.com/problems/next-greater-element-ii/submissions/ class Solution { public: vector<int> nextGreaterElements(vector<int>& nums) { in 阅读全文