using System;
using System.Collections.Generic;
using System.Linq;

namespace _04Orders
{
    class Program
    {
        static void Main(string[] args)
        {
            var products = new Dictionary<string, double>();
            var pricesOfProducts = new Dictionary<string, double>();

            string input = string.Empty;
            while ((input = Console.ReadLine()) != "buy")
            {
                string[] productInfo = input.Split();
                string productName = productInfo[0];
                double productPrice = double.Parse(productInfo[1]);
                double productQuantity = double.Parse(productInfo[2]);

                if (!products.ContainsKey(productName))
                {
                    products.Add(productName, productQuantity);
                }
                else
                {
                    products[productName] += productQuantity;
                }

                if (!pricesOfProducts.ContainsKey(productName))
                {
                    pricesOfProducts.Add(productName, productPrice);
                }
                else
                {
                    pricesOfProducts[productName] = productPrice;
                }

                products.Select(x => x.Value * productPrice).ToDictionary(x => x, x => true);
            }

            foreach (var kvp in products)
            {
                Console.WriteLine($"{kvp.Key} -> {kvp.Value:F2}");
            }
        }
    }
}