func_code_string: #include <bits/stdc++.h>   using namespace std;   const int INF = 0x3f3f3f3f;   const double PI = acos(-1.0);   const int N = 1e5 + 5;   int n;   map<string, set<string> > m;   map<string, set<string> > m2;   set<string> host;   vector<set<string> > res;   int main(void) {     ios_base::sync_with_stdio(false);     cin >> n;     while (n--) {       string s;       cin >> s;       host.insert(s);       string s1 =   , s2 =   ;       int count = 0;       for (int i = 0; i < (int)s.size(); i++) {         if (s[i] ==  / ) count++;         if (count < 3) {           s1 += s[i];         } else {           s2 += s[i];         }       }       s1 +=    ;       s2 +=    ;       m[s1].insert(s2);     }     for (map<string, set<string> >::iterator it = m.begin(); it != m.end();          it++) {       string str =   ;       for (set<string>::iterator itt = (it->second).begin();            itt != (it->second).end(); itt++) {         str += (*itt);       }       m2[str].insert(it->first);     }     for (map<string, set<string> >::iterator it = m2.begin(); it != m2.end();          it++) {       if ((it->second).size() > 1) {         res.push_back(it->second);       }     }     cout << res.size() << endl;     for (int i = 0; i < (int)res.size(); i++) {       for (set<string>::iterator it = res[i].begin(); it != res[i].end(); it++) {         cout << (*it) <<    ;       }       cout << endl;     }     return 0;   }   