class Solution {

public:

    vector<string> removeComments(vector<string>& source) {

        vector<string> res;

        string ln;

        int state = ;

        for (const auto & line : source) {

            for (int i = , ll = line.length(); i < ll; i++) {

                if (state == ) {

                    if (i < ll-) {

                        if (line[i] == '/' && line[i+] == '/')

                            break;  // // comment, skip line

                        else if (line[i] == '/' && line[i+] == '*') {

                            state = ;

                            i += ;

                            continue;

                        }

                    }

                    ln.push_back(line[i]);

                }

                else if (state == ) {  // inside /*

                    if (i < ll- && line[i] == '*' && line[i+] == '/') {

                        state = ;

                        i += ;

                        continue;

                    }

                }

            }

            if (state ==  && ln.length() > ) {

                res.push_back(ln);

                ln = "";

            }

        }

        if (ln.length() > )

            res.push_back(ln);

        return res;

    }

};