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/***User register using name, if not exist in DB, add to db and return ok, if already exist new user name to be created using rule least i is appended and prompted back to user #user i/p will be n (number of registration requests) and o/p will be ok/newname***/ #include <iostream> #include <vector> #include <map> #include <sstream> using namespace std; vector<string> vDB; map<string, int> nameFrequency; string processRegistrationRequest(string name) { if(nameFrequency[name] == 0) { vDB.push_back(name); nameFrequency[name]++; return "ok"; } else { stringstream str; str<<name<<nameFrequency[name]; vDB.push_back(str.str()); nameFrequency[name]++; return str.str(); } } int main() { int numberOfRequests = 0; cin >> numberOfRequests; string name; for(int i=0; i<numberOfRequests; i++) { cin >> name; cout<< processRegistrationRequest(name) <<endl; } cout<<"DB"<<endl; for(auto x: vDB) cout<<x<<endl; return 0; }
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