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

namespace ConsoleApp53
{
    class Program
    {
        class Item
        {
            public double price;
            public double quantity;

            public Item(double p, double q)
            {
                price = p;
                quantity = q;
            }

            public double GetTotalPrice()
            {
                return price * quantity;
            }
            public void UpdateQuantityAndPrice(double price, double newQuantity)
            {
                quantity += newQuantity;
                this.price = price;

            }


        }
        static void Main(string[] args)
        {
            var orders = new Dictionary<String, Item>();
            string input = string.Empty;

            while ((input = Console.ReadLine()) != "buy")
            {

                string[] inputStrings = input.Split();

                if (!orders.ContainsKey(inputStrings[0]))
                {
                    Item item = new Item(double.Parse(inputStrings[1]), double.Parse(inputStrings[2]));
                    orders.Add(inputStrings[0], item);
                }
                else
                {
                    Item curItem = orders[inputStrings[0]];
                    curItem.UpdateQuantityAndPrice(double.Parse(inputStrings[1]), double.Parse(inputStrings[2]));
                }

            }

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