public static void main ( String [ ] args ) throws Exception {
  Scanner in = new Scanner ( new File ( "Main.in" ) ) ;
  PrintWriter out = new PrintWriter ( new File ( "Main.out" ) ) ;
  int tests = in . nextInt ( ) ;
  for ( int test = 1 ;
  test <= tests ;
  test ++ ) {
    out . print ( "Case #" + test + ": " ) ;
    int n = in . nextInt ( ) ;
    int m = in . nextInt ( ) ;
    in . nextLine ( ) ;
    Tree t = new Tree ( "" ) ;
    for ( int i = 0 ;
    i < n ;
    i ++ ) {
      String d = in . nextLine ( ) ;
      add ( t , d ) ;
    }
    int was = t . size ( ) ;
    for ( int i = 0 ;
    i < m ;
    i ++ ) {
      String d = in . nextLine ( ) ;
      add ( t , d ) ;
    }
    out . println ( t . size ( ) - was ) ;
  }
  out . close ( ) ;
}

public static void main ( String [ ] args ) throws Exception { Scanner in = new Scanner ( new File ( " Main . in " ) ) ; PrintWriter out = new PrintWriter ( new File ( " Main . out " ) ) ; int tests = in . nextInt ( ) ; for ( int test = 1 ; test <= tests ; test ++ ) { out . print ( " Case ▁ # " + test + " : ▁ " ) ; int n = in . nextInt ( ) ; int m = in . nextInt ( ) ; in . nextLine ( ) ; Tree t = new Tree ( " " ) ; for ( int i = 0 ; i < n ; i ++ ) { String d = in . nextLine ( ) ; add ( t , d ) ; } int was = t . size ( ) ; for ( int i = 0 ; i < m ; i ++ ) { String d = in . nextLine ( ) ; add ( t , d ) ; } out . println ( t . size ( ) - was ) ; } out . close ( ) ; }
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