using System;

using System.Collections.Generic;

namespace teste

{

    public class Soma

    {

        public int a, b;

        public Soma(int a, int b){

            this.a = a;

            this.b = b;

        }

    }

    public class SomaTri: Soma

    {

        public int z;

        public SomaTri(int a, int b, int z):base(a, b){

            this.z = z;

        }

        public int Conta(){

            return a + b + z;

        }

        ~SomaTri(){}

    }

    public class Result

    {

        public static void Main(){

        Soma result = new  SomaTri(10, 20, 30);

        Console.WriteLine(result);

        }

        public class Pair<TFirst,TSecond>

{

    public TFirst First;

    public TSecond Second;

}

    }

}