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object Main extends App {
            val candidates = Seq(
                "Janusz Ryszard Korwin-Mikke",
                "Bronisław Maria Komorowski",
                "Adam Sebastian Jarubas",
                "Paweł Piotr Kukiz",
                "Marian Janusz Kowalski",
                "Jacek Wilk",
                "Andrzej Sebastian Duda",
                "Janusz Marian Palikot",
                "Magdalena Agnieszka Ogórek",
                "Paweł Jan Tanajno",
                "Grzegorz Michał Braun")
            seq.sortBy(_.length).foreach(println)
}

Main.scala:14: error: not found: value seq
            seq.sortBy(_.length).foreach(println)
            ^
one error found
Usage: scalac <options> <source files>
where possible standard options include:
  -Dproperty=value                Pass -Dproperty=value directly to the runtime system.
  -J<flag>                        Pass <flag> directly to the runtime system.
  -P:<plugin>:<opt>               Pass an option to a plugin
  -X                              Print a synopsis of advanced options.
  -bootclasspath <path>           Override location of bootstrap class files.
  -classpath <path>               Specify where to find user class files.
  -d <directory|jar>              destination for generated classfiles.
  -dependencyfile <file>          Set dependency tracking file.
  -deprecation                    Emit warning and location for usages of deprecated APIs.
  -encoding <encoding>            Specify character encoding used by source files.
  -explaintypes                   Explain type errors in more detail.
  -extdirs <path>                 Override location of installed extensions.
  -feature                        Emit warning and location for usages of features that should be imported explicitly.
  -g:<level>                      Set level of generated debugging info. (none,source,line,vars,notailcalls) default:vars
  -help                           Print a synopsis of standard options
  -javabootclasspath <path>       Override java boot classpath.
  -javaextdirs <path>             Override java extdirs classpath.
  -language:<_,feature,-feature>  Enable or disable language features: `_' for all, `-language:help' to list
  -no-specialization              Ignore @specialize annotations.
  -nobootcp                       Do not use the boot classpath for the scala jars.
  -nowarn                         Generate no warnings.
  -optimise                       Generates faster bytecode by applying optimisations to the program
  -print                          Print program with Scala-specific features removed.
  -sourcepath <path>              Specify location(s) of source files.
  -target:<target>                Target platform for object files. All JVM 1.5 targets are deprecated. (jvm-1.5,jvm-1.6,jvm-1.7,jvm-1.8) default:jvm-1.6
  -toolcp <path>                  Add to the runner classpath.
  -unchecked                      Enable additional warnings where generated code depends on assumptions.
  -uniqid                         Uniquely tag all identifiers in debugging output.
  -usejavacp                      Utilize the java.class.path in classpath resolution.
  -usemanifestcp                  Utilize the manifest in classpath resolution.
  -verbose                        Output messages about what the compiler is doing.
  -version                        Print product version and exit.
  @<file>                         A text file containing compiler arguments (options and source files)

spoj: The program compiled successfully, but Main.class was not found.
      Class Main should contain method: def main(args: Array[String]).

Standard output is empty