using System;
using System.Collections.Generic;
using System.Linq;
using System.Text.RegularExpressions;

namespace Plant_Discovery
{
    class Program
    {
        static void Main(string[] args)
        {
            int countOfLine = int.Parse(Console.ReadLine());
            Dictionary<string, int> plantRarity = new Dictionary<string, int>();
            Dictionary<string, List<double>> plantRate = new Dictionary<string, List<double>>();
            for (int i = 0; i < countOfLine; i++)
            {
                string line = Console.ReadLine();
                string[] lineSplit = line.Split("<->").ToArray();
                string name = lineSplit[0];
                int rarity = int.Parse(lineSplit[1]);
                if (!plantRarity.ContainsKey(name))
                {
                    plantRarity.Add(name, rarity);
                    plantRate.Add(name, new List<double>());
                }
                else
                {
                    plantRarity[name] = rarity;
                }
            }

            while (true)
            {
                string line = Console.ReadLine();
                if (line == "Exhibition")
                {
                    Console.WriteLine("Plants for the exhibition:");
                    var sortedPlants = plantRarity
                        .OrderByDescending(p => p.Value)
                        .ThenByDescending(p => plantRate[p.Key].Count > 0
                            ? plantRate[p.Key].Average()
                            : 0.0);

                    foreach (var (plantName, rarity) in sortedPlants)
                    {
                        double rating = plantRate[plantName].Count > 0
                            ? plantRate[plantName].Average()
                            : 0.0;
                        Console.WriteLine(
                            $"- {plantName}; Rarity: {rarity}; Rating: {rating:F2}");
                    }

                    return;
                }

                string[] lineSplit = Regex.Split(line, @"[:-]")
                    .Select(s => s.Trim())
                    .ToArray();

                string name = lineSplit[1];

                if (!plantRarity.ContainsKey(name))
                {
                    Console.WriteLine("error");
                    continue;
                }

                switch (lineSplit[0])
                {
                    case "Rate":
                        double rate = double.Parse(lineSplit[2]);
                        plantRate[name].Add(rate);
                        break;
                    case "Update":
                        int newRarity = int.Parse(lineSplit[2]);
                        plantRarity[name] = newRarity;
                        break;
                    case "Reset":
                        plantRate[name].Clear();
                        break;
                }
            }
        }
    }
}