1452. People Whose List of Favorite Companies Is Not a Subset of Another List

class Solution {
public:
    vector<int> peopleIndexes(vector<vector<string>>& favs) {
        for(auto &i:favs) sort(i.begin(),i.end());
        vector<int> res;
        for(int i=0;i<favs.size();i++){
            bool chk=true;
            for(int j=0;j<favs.size() && chk;j++){
                if(i==j) continue;
                chk=!includes(favs[j].begin(),favs[j].end(),favs[i].begin(),favs[i].end());
            }
            if(chk) res.push_back(i);
        }
	return res;
  }
};