using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Text.RegularExpressions;

namespace ConsoleApplication1
{
    class Program
    {
        static Dictionary<string, string> MyScanf(string format, params string[] values)
        { 
            var result = Regex.Match(Console.ReadLine(), format).Groups;
            return values.Select((x, i) => new { key = x, value = result[i + 1].Value })
                         .ToDictionary(x => x.key, x => x.value);
        }
        static void Main(string[] args)
        {
            var input = MyScanf(@"(\d+) (\d+)", "a", "b");
            Console.WriteLine("your input is a = {0}, b = {1}.", input["a"], input["b"]);
        }
    }
}