func_code_string: #include <bits/stdc++.h>   using namespace std;   int main(int argc, char *argv[]) {     ios_base::sync_with_stdio(false);     cin.tie(NULL);     string line;     while (getline(cin, line)) {       map<int, vector<string> > answer;       line +=  , ;       istringstream iss(line);       string s;       stack<int> stk;       string tmp;       while (getline(iss, s,  , )) {         getline(iss, tmp,  , );         int children = stoi(tmp);         answer[stk.size()].push_back(s);         if (stk.size() && stk.top() > 0) {           stk.top()--;         }         stk.push(children);         while (stk.size() && stk.top() <= 0) stk.pop();       }       cout << answer.size() << endl;       for (auto i = 0; i < answer.size(); i++) {         for (auto &word : answer[i]) cout << word <<    ;         cout << endl;       }     }     return 0;   }   