using System;

using System.Collections.Generic; 

public class Program

{

    public static void Main()

    {

        var t=new VectorNum <g>(3);

        var r =new  VectorNum <int>(3);

        r.AddTo (t);

        Console.WriteLine("Hello World");

    }

}

​

class VectorNum<T> where T: struct

{

    List<System.Numerics.Vector<T>> payload;

    int size;

​

    public VectorNum(int size)

    {

        var vectorSize = System.Numerics.Vector<T>.Count;

        var vectorCount = (size + vectorSize - 1) / vectorSize;

        payload = new List<System.Numerics.Vector<T>>(vectorCount);

        this.size = size;

    }

​

    public void AddTo(VectorNum<T> r)

    {

        List<System.Numerics.Vector<T>> ldata = payload, rdata = r.payload;

        if (size != r.size)

            throw new ArgumentException();

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

            ldata[i] = ldata[i] + rdata[i];

    }

}

struct g {}