func_code_string: #include <bits/stdc++.h>   using namespace std;   int main() {     string s;     set<string> l;     int ans = 0;     while (getline(cin, s)) {       if (s ==   ) break;       if (s[0] ==  + ) {         l.insert(s.substr(1));       } else if (s[0] ==  - ) {         l.erase(s.substr(1));       } else {         int i = 0;         while (s[i] !=  : ) i++;         ans += ((int)s.size() - i - 1) * l.size();       }     }     cout << ans << endl;     return 0;   }   