using System;

using System.Threading.Tasks;

public class Program

{

    public static void Main()

    {

        Task task = FooAsync();

        Console.WriteLine("3");

        task.Wait();

        Console.WriteLine("6");

    }

    static async Task FooAsync()

    {

        Console.WriteLine("1");

        await BarAsync();

        Console.WriteLine("5");

    }

    static async Task BarAsync()

    {

        Console.WriteLine("2");

        await Task.Delay(1000);

        Console.WriteLine("4");

    }

}