AMinerTask

using System;
using System.Collections.Generic;

namespace AMinerTask
{
    class Program
    {
        static void Main(string[] args)
        {
            var dictionaryCountResource = new Dictionary<string, int>();
            string resource = Console.ReadLine();
            while (resource != "stop")
            {
                int quantity = int.Parse(Console.ReadLine());
                if (dictionaryCountResource.ContainsKey(resource) == false)
                {
                    dictionaryCountResource[resource] = quantity;
                }

                else
                {
                    dictionaryCountResource[resource] += quantity;
                }

                resource = Console.ReadLine();
            }

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