using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace _04.ShellBound
{
    class ShellBound
    {
        static void Main(string[] args)
        {
            string input = Console.ReadLine();
            Dictionary<string, HashSet<long>> regionData = new Dictionary<string, HashSet<long>>();
            while (input != "Aggregate")
            {
                string[] tokens = input.Split(new char[] { ' ' }, StringSplitOptions.RemoveEmptyEntries);
                string city = tokens[0];
                long numbers = long.Parse(tokens[1]);

                if (!regionData.ContainsKey(city))
                {
                    regionData[city] = new HashSet<long>();
                }
                regionData[city].Add(numbers);
                input = Console.ReadLine();
            }
            foreach (var region in regionData.Keys)
            {
                if (regionData[region].Count != 1)
                {
                    Console.WriteLine($"{region} -> {string.Join(", ", regionData[region])} ({regionData[region].Sum() - (regionData[region].Sum() / regionData[region].Count)})");
                }
                else
                {
                    Console.WriteLine($"{region} -> {string.Join(", ", regionData[region])} ({regionData[region]})");
                }
            }
        }
    }
}