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  1. #include <iostream>
  2. #include <string>
  3. #include <map>
  4.  
  5. using namespace std;
  6.  
  7. class username{
  8. public:
  9.     username(string a = "0");
  10.     friend istream & operator >> (istream & in, username & a);
  11.     friend ostream & operator << (ostream & out, username & a);
  12.    // friend int isThere (int n, int a, username * base);
  13.     friend bool operator < (const username a, const username b);
  14.  
  15.     string nick;
  16. private:
  17.     };
  18.  
  19. username::username(string a){
  20.     nick = a;
  21. }
  22.  
  23. istream & operator>>(istream &in, username &a){
  24. 	string name;
  25. 	in >> name;
  26. 	a = username(name);
  27. 	return in;
  28. }
  29. ostream & operator<<(ostream &out, username &a){
  30. 	out << a.nick;
  31. 	return out;
  32. }
  33.  
  34.  
  35. inline bool operator < (const username a, const username b){
  36.     if (a.nick<b.nick)
  37.         return 1;
  38.     else return 0;
  39. }
  40.  
  41. int main()
  42. {
  43.     std::ios::sync_with_stdio(false);
  44.     int n = 0;
  45.     cin >> n;
  46.     string s;
  47.  
  48.     map < username,int > m;
  49.     while(n--){cin>>s;
  50.     if(m[s]++)
  51.         cout<<s<<m[s]-1;
  52.     else
  53.         cout<<"OK";
  54.     cout<<endl;}
  55.  
  56.     return 0;
  57. }
Success #stdin #stdout 0s 15248KB
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https://ideone.com/innaMF
language:
C++14 (clang 8.0)
created:
8 years ago
visibility:
public

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