open System

[<EntryPoint>]
let main args =
    let x = Console.ReadLine() |> int
    
    let numbers =
        Seq.initInfinite (fun _ -> Console.ReadLine())
        |> Seq.takeWhile (String.IsNullOrWhiteSpace >> not)
        |> Seq.filter (fun v -> v |> int < x)
        |> Seq.iter (printf "%s\n")
    
    0