KhaledElshamy/C. Registration System Solution-Codeforces

## C. Registration System Solution-Codeforces
#include <bits/stdc++.h>
using namespace std;
 //Compiler version g++ 6.3.0

 int main()
 {
 	int n,count=0;
 	string s;
 	cin>>n;
 	set<string>s1;
 	map<string,int>p;
 	for(int i=0;i<n;i++){
 		cin>>s;
 		if(s1.find(s)!=s1.end()){
 			p[s]++;
 			cout<<s<<p[s]<<endl;
 		}
 		else{
 			p[s]=count;
 			cout<<"OK"<<endl;
 		}
 		s1.insert(s);
 	}
 	return 0;
 }
	#include <bits/stdc++.h>
	using namespace std;
	//Compiler version g++ 6.3.0

	int main()
	{
	int n,count=0;
	string s;
	cin>>n;
	set<string>s1;
	map<string,int>p;
	for(int i=0;i<n;i++){
	cin>>s;
	if(s1.find(s)!=s1.end()){
	p[s]++;
	cout<<s<<p[s]<<endl;
	}
	else{
	p[s]=count;
	cout<<"OK"<<endl;
	}
	s1.insert(s);
	}
	return 0;
	}