public static void main ( String [ ] args ) throws Exception {
  String name = "A-large" ;
  String path = "C:/codejam/" ;
  Scanner sc = new Scanner ( new File ( path + name + ".in" ) ) ;
  PrintWriter pw = new PrintWriter ( path + name + ".out" ) ;
  int N = sc . nextInt ( ) ;
  for ( int z = 1 ;
  z <= N ;
  z ++ ) {
    int P = sc . nextInt ( ) ;
    int K = sc . nextInt ( ) ;
    int L = sc . nextInt ( ) ;
    long [ ] f = new long [ L ] ;
    for ( int i = 0 ;
    i < L ;
    i ++ ) {
      f [ i ] = sc . nextLong ( ) ;
    }
    sort ( f ) ;
    long res = 0 ;
    for ( int i = 0 ;
    i < L ;
    i ++ ) {
      long r = i / K + 1 ;
      res += f [ L - 1 - i ] * r ;
    }
    pw . print ( "Case #" + z + ": " + res ) ;
    pw . println ( ) ;
    pw . flush ( ) ;
  }
  pw . close ( ) ;
}

public static void main ( String [ ] args ) throws Exception { String name = " A - large " ; String path = " C : / codejam / " ; Scanner sc = new Scanner ( new File ( path + name + " . in " ) ) ; PrintWriter pw = new PrintWriter ( path + name + " . out " ) ; int N = sc . nextInt ( ) ; for ( int z = 1 ; z <= N ; z ++ ) { int P = sc . nextInt ( ) ; int K = sc . nextInt ( ) ; int L = sc . nextInt ( ) ; long [ ] f = new long [ L ] ; for ( int i = 0 ; i < L ; i ++ ) { f [ i ] = sc . nextLong ( ) ; } sort ( f ) ; long res = 0 ; for ( int i = 0 ; i < L ; i ++ ) { long r = i / K + 1 ; res += f [ L - 1 - i ] * r ; } pw . print ( " Case ▁ # " + z + " : ▁ " + res ) ; pw . println ( ) ; pw . flush ( ) ; } pw . close ( ) ; }
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