using System;

internal static class Program
{
    private static void Main(string[] args)
    {
        int bookedPlaces = 7;
        var extraPlaces = 3;
        long sessionId = 42001;
        Console.WriteLine($"Session {sessionId}: {bookedPlaces + extraPlaces} booked");
        Console.WriteLine($"int maximum: {int.MaxValue}");
    }
}