http://codeforces.com/problemset/problem/4/C

C. Registration system

time limit per test

5 seconds

memory limit per test

64 megabytes

input

standard input

output

standard output

A new e-mail service "Berlandesk" is going to be opened in Berland in the near future. The site administration wants to launch their project as soon as possible, that's why they ask you to 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 a name does not exist in the system database, it is inserted into the database, and the user gets the responseOK, confirming the successful registration. If thename already exists in the system database, the system makes up a new user name, sends it to the user as a prompt andalso inserts the prompt into the database. The new name is formed by the following rule. Numbers, starting with 1, are appended one after another toname (name1,name2, ...), among these numbers the leasti is found so that namei does not yet exist in the database.

Input

The first line contains number n (1 ≤ n ≤ 10⁵). The followingn lines contain the requests to the system. Each request is a non-empty line, and consists of not more than 32 characters, which are all lowercase Latin letters.

Output

Print n lines, which are 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 test(s)

Input

4abacabaacabaabacabaacab

Output

OKOKabacaba1OK

Input

6firstfirstsecondsecondthirdthird

Output

OKfirst1OKsecond1OKthird1

#include<iostream>#include<cstdio>#include<cstring>using namespace std;char str[100005][40];int fig[100005];int main(){    int n;    while(scanf("%d",&n)!=EOF)    {        memset(fig,0,sizeof(fig));        for(int i=0;i<n;i++)        {            scanf("%s",str[i]);            int k=0;            int index=0;            for(int j=0;j<i;j++)            {                if(strcmp(str[i],str[j])==0)                {                    k=++fig[j];                    index=j;                    break;                }            }            if(k==0)            printf("OK\n");            else            printf("%s%d\n",str[i],fig[index]);        }    }    return 0;}/*4abacabaacabaabacabaacab6firstfirstsecondsecondthirdthird*/