TreeMap

import java.util.Scanner;
import java.util.TreeMap;

public class p04_LogsAggregator {

    public static void main(String[] args) {
        Scanner input = new Scanner (System.in);
        int n = Integer.parseInt(input.nextLine());

        TreeMap<String, TreeMap<String, Integer>> users= new TreeMap<>();

        for (int i = 0; i < n; i++) {
            String[] userInput = input.nextLine().split(" ");
            String ip = userInput[0];
            String user = userInput[1];
            int minutes = Integer.parseInt(userInput[2]);

            if(!users.containsKey(user)){ // If the user doesn't exist
                users.put(user, new TreeMap<>());
                users.get(user).put(ip, minutes);
            }
            else if (users.get(user).containsKey(ip)){ // If the IP already exists
                int tempMinutes = users.get(user).get(ip);
                users.get(user).put(ip, tempMinutes + minutes);
            }
            else {      // If a user exists, but the IP doesn't have a record
                users.get(user).put(ip, minutes);
            }
        }
        for (String user : users.keySet()) {
            System.out.print(user+": ");
            int totalMinutes = 0;

            for (String ip : users.get(user).keySet()) {
                totalMinutes += users.get(user).get(ip);
            }
            System.out.print(totalMinutes+" ");
            System.out.println(users.get(user).keySet());
        }
    }
}