using System;

using System.Collections.Generic;

public class Program

{

    public class Venta

    {

        public int A

        {

            get; set;

        }

        public int B

        {

            get; set;

        }

        public int C

        {

            get; set;

        }

        public Venta(int a, int b, int c)

        {

            A = a;

            B = b;

            C = c;

        }

        public override String ToString()

        {

            return "{ A: " + A + ", B: " + B + ", C: " + C + " }";

        }

    }

    public static void Main()

    {

        Dictionary<long, Venta> d = new Dictionary<long, Venta>()

        {

            { 1, new Venta(1, 1, 50) },

            { 2, new Venta(1, 1, 50) }

        };

        foreach (KeyValuePair<long, Venta> e in d)

        {

            Console.WriteLine(e.Key + ": " + e.Value.ToString());

        }

    }

}