using System;

using System.Collections.Generic;

struct Size{

    public int H{get;set;}

    public int W{get;set;}

    public Size(int h, int w){

        H = h;

        W = w;

    }

    public static Size operator+(Size a, Size b){

        return new Size(a.H + b.H, a.W + b.W);

    }

    public override string ToString(){

        return "Height: " + H + "\n"

             + "Width: " + W;   

    }

}

class Vector{

    List<Size> s;

    public Vector(int c){

    }

    public int Count {get;set;}

    public Size this[int index]{

        get{

            if(s.Count < index){

                return new Size();

            }

            return s[index];

        }

    }

    public void Add(Size el){

        s.Add(el);

        Count = s.Count;

    }

    public static Vector operator+(Vector a, Vector b){

        Vector v = new Vector(0);

        for(int i = 0; i < a.Count; i++){

            v.Add(a[i]);    

        }

        for(int i = 0; i < b.Count; i++){

            v.Add(b[i]);    

        }

        return v;

    }

}

public class Program

{

    public static void Main()

    {

    }

}