solution.java

// https://github.com/Utkarsh299-tech

import java.io.*;
import java.util.*;
import java.text.*;
import java.math.*;
import java.util.regex.*;

public class Solution {

 public static void main(String[] args) {
 Scanner s = new Scanner(System.in);
 int t = s.nextInt();
 String [] pair_left = new String[t];
 String [] pair_right = new String[t];
 
 for (int i = 0; i < t; i++) {
 pair_left[i] = s.next();
 pair_right[i] = s.next();
 }
 s.close();
 
 HashSet<String> set = new HashSet<>(t);
 for(int i = 0; i < t; i++) {
 set.add(pair_left[i] + " " + pair_right[i]);
 System.out.println(set.size());
 }
 }
}