Miner Task

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

namespace MinerTask
{
    class Program
    {
        static void Main(string[] args)
        {
            string input = Console.ReadLine();
            var dict = new Dictionary<string, int>();

            while (input != "stop")
            {
                if (dict.ContainsKey(input))
                {
                    dict[input] += int.Parse(Console.ReadLine());
                }
                else
                {
                    dict[input] = int.Parse(Console.ReadLine());
                }
                input = Console.ReadLine();
            }
            Console.WriteLine(String.Join("\n", dict.Select(x => x.Key + " -> " + x.Value)));
        }
    }
}