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 [ ] t = new long [ n ] ;
  long r = 0 ;
  long p1 = 0 ;
  long p2 = 0 ;
  for ( int i = 0 ;
  i < n ;
  i ++ ) {
    long v = sc . nextLong ( ) ;
    t [ i ] = v ;
  }
  Arrays . sort ( t ) ;
  double ans1 = 0 ;
  long ans2 = 0 ;
  for ( int i = 0 ;
  i < n ;
  i ++ ) {
    if ( i <= a - 1 ) {
      ans1 += t [ n - 1 - i ] ;
    }
    if ( r == t [ n - 1 - i ] ) {
      p1 ++ ;
    }
    else {
      if ( i <= a - 1 ) {
        r = t [ n - 1 - i ] ;
        p1 = 1 ;
      }
      else {
        break ;
      }
    }
    if ( i == a - 1 ) {
      p2 = p1 ;
    }
  }
  if ( p2 != a ) {
    if ( ( ( ans1 - r * p2 ) / ( a - p2 ) ) == r ) {
      for ( long i = p2 ;
      i <= Math . min ( b - a + p2 , p1 ) ;
      i ++ ) {
        ans2 += c ( p1 , i ) ;
      }
    }
    else {
      ans2 += c ( p1 , p2 ) ;
    }
  }
  else {
    for ( long i = p2 ;
    i <= Math . min ( b - a + p2 , p1 ) ;
    i ++ ) {
      ans2 += c ( p1 , i ) ;
    }
  }
  System . out . println ( ans1 / a ) ;
  System . out . println ( ans2 ) ;
}

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 [ ] t = new long [ n ] ; long r = 0 ; long p1 = 0 ; long p2 = 0 ; for ( int i = 0 ; i < n ; i ++ ) { long v = sc . nextLong ( ) ; t [ i ] = v ; } Arrays . sort ( t ) ; double ans1 = 0 ; long ans2 = 0 ; for ( int i = 0 ; i < n ; i ++ ) { if ( i <= a - 1 ) { ans1 += t [ n - 1 - i ] ; } if ( r == t [ n - 1 - i ] ) { p1 ++ ; } else { if ( i <= a - 1 ) { r = t [ n - 1 - i ] ; p1 = 1 ; } else { break ; } } if ( i == a - 1 ) { p2 = p1 ; } } if ( p2 != a ) { if ( ( ( ans1 - r * p2 ) / ( a - p2 ) ) == r ) { for ( long i = p2 ; i <= Math . min ( b - a + p2 , p1 ) ; i ++ ) { ans2 += c ( p1 , i ) ; } } else { ans2 += c ( p1 , p2 ) ; } } else { for ( long i = p2 ; i <= Math . min ( b - a + p2 , p1 ) ; i ++ ) { ans2 += c ( p1 , i ) ; } } System . out . println ( ans1 / a ) ; System . out . println ( ans2 ) ; }
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object: (identifier) name: (identifier) arguments: (argument_list)))) (local_variable_declaration type: (array_type element: (integral_type) dimensions: (dimensions)) declarator: (variable_declarator name: (identifier) value: (array_creation_expression type: (integral_type) dimensions: (dimensions_expr (identifier))))) (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (decimal_integer_literal))) (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (decimal_integer_literal))) (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (decimal_integer_literal))) (for_statement init: (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (decimal_integer_literal))) condition: (binary_expression left: (identifier) right: (identifier)) update: (update_expression (identifier)) 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