using System;
using System.Collections.Generic;
using System.Linq;
class Program
{
	static void Main()
	{
		var dic = new Dictionary<string, List<int>>();

		while (true)
		{
			var inputLine = Console.ReadLine();
			if (inputLine == "Aggregate")
			{
				break;
			}
			var curent = inputLine
				.Split(" ".ToCharArray(), StringSplitOptions.RemoveEmptyEntries)
				.ToArray();
			string city = curent[0];
			var shellSize = int.Parse(curent[1]);
			if (!dic.ContainsKey(city))
			{
				dic[city] = new List<int>();
			}
			if (!dic[city].Contains(shellSize))
			{
				dic[city].Add(shellSize);
			}
		}
		foreach (var city in dic)
		{
			Console.WriteLine("{0} -> {1} ({2})", city.Key, string.Join(", ", city.Value), Math.Ceiling(city.Value.Sum() - city.Value.Average()));
		}
	}
}