using System;
using System.Collections.Generic;

namespace Orders
{
    class Program
    {
        static void Main(string[] args)
        {

            var productPriceDictionary = new Dictionary<string, decimal>();
            var productQuantityDictionary = new Dictionary<string, int>();
            string input = Console.ReadLine();
            while (input != "buy")
            {
                string[] inputArray = input.Split();
                string product = inputArray[0];
                decimal price = decimal.Parse(inputArray[1]);
                int quantity = int.Parse(inputArray[2]);
                if (productPriceDictionary.ContainsKey(product) == false)
                {
                    productPriceDictionary[product] = price;
                    productQuantityDictionary[product] = quantity;
                }

                else
                {
                    productPriceDictionary[product] = price;
                    productQuantityDictionary[product] += quantity;
                }

                input = Console.ReadLine();
            }

            foreach (var kvp1 in productPriceDictionary)
            {
               string product = kvp1.Key;
               decimal price = kvp1.Value;
               int quantity =productQuantityDictionary[product];
               Console.WriteLine($"{product} -> {price*quantity:F2}");
            }
          }

        }
    }