Codeforces 4C Registration System

Registration SystemTime limit:5000msmemory limit:65536kbthis problem would be judged onCodeforces. Original id:4c
64-bit integer IO format: %i64d Java class name: (any)

A new e-mail Service "Berlandesk" is going to being opened in Berland on the near future. The site administration wants to launch their project as soon as possible, that's why they ask for help. You're suggested to implement the prototype of site registration system. The system should work on the following principle.

Each time a new user wants to register, he sends to the system a request with hisName. If such aname does not exist in the system database, it's inserted into the database, and the User gets the Response ok, confirming the successful registration. If the name already exists in the system database, the system makes-a new use R name, sends it to the user as a prompt and also inserts the prompt into the Databas E. The new name is formed by the following rule. Numbers, starting with 1, is appended one after another to name  (name1,name2, ...), among these numbers the Least  i  is found so that name I  does not yet exist in the database.

Input

The first line contains number n (1≤ n ≤105). The following n lines contain the requests to the system. Each request was a non-empty line, and consists of not more than characters, which was all lowercase Latin.

Output

Print n lines, which is system responses to the requests: OK in case of successful registration, or a Prompt with a new name, if the requested name is already taken.

Sample InputInput

4
Abacaba
Acaba
Abacaba
Acab

Output

Ok
Ok
Abacaba1
Ok

Input

6
First
First
Second
Second
Third
Third

Output

Ok
First1
Ok
Second1
Ok
Third1

SourceCodeforces Beta Round #4 (Div. 2 only) Problem solving: water and water more enjoyable

1#include <bits/stdc++.h>2 using namespacestd;3map<string,int>MP;4 intN;5 stringstr;6 intMain () {7Ios::sync_with_stdio (false);8 mp.clear ();9Cin>>N;Ten      while(n--) { OneCin>>str; A         if(Mp[str]) cout<<str<< (mp[str]++) <<Endl; -         Else { -mp[str]++; thecout<<"OK"<<Endl; -         } -     } -     return 0; +}

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Codeforces 4C Registration System