public static void main ( String [ ] args ) {
  Scanner sc = new Scanner ( System . in ) ;
  int n = sc . nextInt ( ) ;
  int a = sc . nextInt ( ) ;
  int b = sc . nextInt ( ) ;
  long [ ] nums = new long [ n ] ;
  for ( int i = 0 ;
  i < n ;
  i ++ ) {
    nums [ i ] = sc . nextLong ( ) ;
  }
  Arrays . sort ( nums ) ;
  double sum = 0 ;
  int [ ] occurs = new int [ a ] ;
  long count = 0 ;
  for ( int i = n - 1 ;
  i >= n - a ;
  i -- ) {
    sum += nums [ i ] ;
  }
  sum /= a ;
  boolean flag = true ;
  int index = - 1 ;
  if ( nums [ n - 1 ] != nums [ n - a ] ) {
    int counts = 0 ;
    for ( int i = n - 1 ;
    i >= 0 ;
    i -- ) {
      if ( nums [ i ] == nums [ n - a ] ) {
        if ( flag ) {
          index = i + 1 ;
          flag = false ;
        }
        counts ++ ;
      }
    }
    count = combinations ( counts , a - ( n - index ) ) ;
  }
  else {
    int l = 0 ;
    for ( int i = n - 1 ;
    i >= 0 ;
    i -- ) {
      if ( nums [ i ] == nums [ n - 1 ] ) {
        l ++ ;
      }
    }
    for ( int i = a ;
    i <= b ;
    i ++ ) {
      if ( nums [ n - 1 ] == nums [ n - i ] ) {
        count += combinations ( l , i ) ;
      }
    }
  }
  System . out . println ( sum ) ;
  System . out . println ( count ) ;
}

public static void main ( String [ ] args ) { Scanner sc = new Scanner ( System . in ) ; int n = sc . nextInt ( ) ; int a = sc . nextInt ( ) ; int b = sc . nextInt ( ) ; long [ ] nums = new long [ n ] ; for ( int i = 0 ; i < n ; i ++ ) { nums [ i ] = sc . nextLong ( ) ; } Arrays . sort ( nums ) ; double sum = 0 ; int [ ] occurs = new int [ a ] ; long count = 0 ; for ( int i = n - 1 ; i >= n - a ; i -- ) { sum += nums [ i ] ; } sum /= a ; boolean flag = true ; int index = - 1 ; if ( nums [ n - 1 ] != nums [ n - a ] ) { int counts = 0 ; for ( int i = n - 1 ; i >= 0 ; i -- ) { if ( nums [ i ] == nums [ n - a ] ) { if ( flag ) { index = i + 1 ; flag = false ; } counts ++ ; } } count = combinations ( counts , a - ( n - index ) ) ; } else { int l = 0 ; for ( int i = n - 1 ; i >= 0 ; i -- ) { if ( nums [ i ] == nums [ n - 1 ] ) { l ++ ; } } for ( int i = a ; i <= b ; i ++ ) { if ( nums [ n - 1 ] == nums [ n - i ] ) { count += combinations ( l , i ) ; } } } System . out . println ( sum ) ; System . out . println ( count ) ; }
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