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J03010
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J03010
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package test;
import java.util.*;
public class J03010 {
public static void main(String args[]) {
Scanner sc = new Scanner(System.in);
int t = sc.nextInt();
sc.nextLine();
Map<String, Integer> m = new HashMap<>();
while(t-- >0){
String s = sc.nextLine();
String n = "";
Vector<String> v = new Vector<>();
s = s.toLowerCase() + " ";
String x = "";
for(int i = 0; i < s.length(); i++){
if(s.charAt(i) == ' '){
if(x != ""){
v.add(x);
x = "";
}
}
else{
x += s.charAt(i);
}
}
n += v.get(v.size()-1);
for(int i = 0; i < v.size()-1; i++){
n += v.get(i).substring(0,1);
}
if(m.get(n) == null){
m.put(n, 1);
x = "";
}
else {
x = Integer.toString(m.get(n) + 1);
m.put(n, m.get(n)+1);
}
System.out.print(n + x + "@ptit.edu.vn");
System.out.println();
}
}
}