using System;
using System.Linq;

public class Test
{
	public static void Main()
	{
        var List = new []
        {
            new { tovar_code = 1, tovar_kol = 10, tovar_obyem = 20 },
            new { tovar_code = 2, tovar_kol = 20, tovar_obyem = 30 },
            new { tovar_code = 3, tovar_kol = 30, tovar_obyem = 60 },
            new { tovar_code = 4, tovar_kol = 40, tovar_obyem = 80 },
            new { tovar_code = 5, tovar_kol = 50, tovar_obyem = 90 }
        }.ToList();

        var total_quantity = List.Sum(x => x.tovar_kol);
        var total_volume = List.Sum(x => x.tovar_obyem);
        
        Console.WriteLine($"Total quantity: {total_quantity}, total volume: {total_volume}");

        var result =
            List.Aggregate(
                new { total_quantity = 0, total_volume = 0 },
                (sum, curr) => new { total_quantity = sum.total_quantity + curr.tovar_kol,
                                     total_volume = sum.total_volume + curr.tovar_obyem });

        Console.WriteLine($"Total quantity: {result.total_quantity}, total volume: {result.total_volume}");
        
        int total_quantity_2 = 0;
        double total_volume_2 = 0;
        foreach (var item in List)
        {
            total_quantity_2 += item.tovar_kol;
            total_volume_2 += item.tovar_obyem;
        }
        Console.WriteLine($"Total quantity: {total_quantity_2}, total volume: {total_volume_2}");
	}
}