void Main()
{
	AllocationSector allocationSector = new AllocationSector();

	var sectors = new HashSet<Sector>() {
		new Sector {sector="A"},
		new Sector {sector="B"}
		
	};
	
	
	var stocks = new HashSet<Stock>() {
		new Stock {sector="A", assetValue=20, symbol="1"},
		new Stock {sector="A", assetValue=295, symbol="15"},
		new Stock {sector="A", assetValue=16, symbol="19"},
		new Stock {sector="B", assetValue=30, symbol="2"},
		new Stock {sector="B", assetValue=50, symbol="3"},
		new Stock {sector="B", assetValue=21, symbol="35"},
		new Stock {sector="B", assetValue=45, symbol="13"},
		new Stock {sector="G", assetValue=45, symbol="143"}
	};

	//cycle(sectors, stocks);
	doUsingLINQ(sectors, stocks, allocationSector);
	
	
	
}

void doUsingLINQ(HashSet<Sector> sectors,  HashSet<Stock> stocks, AllocationSector allocationSector)
{
	(from stock in stocks
	 join sector in sectors on stock.sector equals sector.sector
	 group stock by stock.sector into res
	 select new Sector { sector = res.Key, assetValue = res.Sum(_ => (int)_.assetValue) })
  .ToList().ForEach(s => allocationSector.allocations.Add(s));
  
  allocationSector.Dump();
 
}
void cycle(HashSet<Sector> sectors,  HashSet<Stock> stocks, AllocationSector allocationSector)
{
	foreach (var sector in sectors)
	{
		double sumAssetValue = 0;
		foreach (Stock stock in stocks)
		{
			if (sector.sector == stock.sector)
			{
				sumAssetValue += stock.assetValue;
			}
		}
		sector.assetValue = (int)sumAssetValue;
		allocationSector.allocations.Add(sector);
	}
	
	sectors.Dump();

}

class Sector
{
	public String sector {get; set;}
	public int assetValue {get; set;}
	public float proportion {get; set;}
	
	
}

class Stock
{
	public String symbol {get;set;}
	public int volume  {get;set;}
	public double assetValue  {get;set;}
	 public String sector  {get;set;}
}

class AllocationSector
{
	public List<Sector> allocations = new List<Sector>();
}