public static void main ( String [ ] $ ) {
  int n = s . nextInt ( ) , a = s . nextInt ( ) , b = s . nextInt ( ) ;
  long [ ] v = new long [ n ] ;
  Arrays . setAll ( v , i -> s . nextLong ( ) ) ;
  Arrays . sort ( v ) ;
  long sum = 0 ;
  int use = 0 , count = 0 ;
  for ( int i = n - a ;
  i < n ;
  ++ i ) {
    if ( v [ n - a ] == v [ i ] ) {
      ++ use ;
      ++ count ;
    }
    sum += v [ i ] ;
  }
  System . out . println ( BigDecimal . valueOf ( sum * 1.0 / a ) . toPlainString ( ) ) ;
  for ( int i = 0 ;
  i < n - a ;
  ++ i ) if ( v [ n - a ] == v [ i ] ) ++ count ;
  System . err . println ( count + " " + use ) ;
  if ( v [ n - a ] == v [ n - 1 ] ) {
    long r = 0 ;
    for ( int i = 0 , e = Math . min ( b - a , count - use ) ;
    i <= e ;
    ++ i ) r += comb ( count , use + i ) ;
    System . out . println ( r ) ;
  }
  else {
    System . out . println ( comb ( count , use ) ) ;
  }
}

public static void main ( String [ ] $ ) { int n = s . nextInt ( ) , a = s . nextInt ( ) , b = s . nextInt ( ) ; long [ ] v = new long [ n ] ; Arrays . setAll ( v , i -> s . nextLong ( ) ) ; Arrays . sort ( v ) ; long sum = 0 ; int use = 0 , count = 0 ; for ( int i = n - a ; i < n ; ++ i ) { if ( v [ n - a ] == v [ i ] ) { ++ use ; ++ count ; } sum += v [ i ] ; } System . out . println ( BigDecimal . valueOf ( sum * 1.0 / a ) . toPlainString ( ) ) ; for ( int i = 0 ; i < n - a ; ++ i ) if ( v [ n - a ] == v [ i ] ) ++ count ; System . err . println ( count + " ▁ " + use ) ; if ( v [ n - a ] == v [ n - 1 ] ) { long r = 0 ; for ( int i = 0 , e = Math . min ( b - a , count - use ) ; i <= e ; ++ i ) r += comb ( count , use + i ) ; System . out . println ( r ) ; } else { System . out . println ( comb ( count , use ) ) ; } }
(method_declaration (modifiers) type: (void_type) name: (identifier) parameters: (formal_parameters (formal_parameter type: (array_type element: (type_identifier) dimensions: (dimensions)) name: (identifier))) body: (block (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list))) declarator: (variable_declarator name: (identifier) value: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list))) declarator: (variable_declarator name: (identifier) value: (method_invocation 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))))) (expression_statement (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (identifier) (lambda_expression parameters: (identifier) body: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list)))))) (expression_statement (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (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)) declarator: (variable_declarator name: (identifier) value: (decimal_integer_literal))) (for_statement init: (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (binary_expression left: (identifier) right: (identifier)))) condition: (binary_expression left: (identifier) right: (identifier)) update: (update_expression (identifier)) body: (block (if_statement condition: (parenthesized_expression (binary_expression left: (array_access array: (identifier) index: (binary_expression left: (identifier) right: (identifier))) right: (array_access array: (identifier) index: (identifier)))) consequence: (block (expression_statement (update_expression (identifier))) (expression_statement (update_expression (identifier))))) (expression_statement (assignment_expression left: (identifier) right: (array_access array: (identifier) index: (identifier)))))) (expression_statement (method_invocation object: (field_access object: (identifier) field: (identifier)) name: (identifier) arguments: (argument_list (method_invocation object: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (binary_expression left: (binary_expression left: (identifier) right: (decimal_floating_point_literal)) right: (identifier)))) name: (identifier) arguments: (argument_list))))) (for_statement init: (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (decimal_integer_literal))) condition: (binary_expression left: (identifier) right: (binary_expression left: (identifier) right: (identifier))) update: (update_expression (identifier)) body: (if_statement condition: (parenthesized_expression (binary_expression left: (array_access array: (identifier) index: (binary_expression left: (identifier) right: (identifier))) right: (array_access array: (identifier) index: (identifier)))) consequence: (expression_statement (update_expression (identifier))))) (expression_statement (method_invocation object: (field_access object: (identifier) field: (identifier)) name: (identifier) arguments: (argument_list (binary_expression left: (binary_expression left: (identifier) right: (string_literal)) right: (identifier))))) (if_statement condition: (parenthesized_expression (binary_expression left: (array_access array: (identifier) index: (binary_expression left: (identifier) right: (identifier))) right: (array_access array: (identifier) index: (binary_expression left: (identifier) right: (decimal_integer_literal))))) consequence: (block (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)) declarator: (variable_declarator name: (identifier) value: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (binary_expression left: (identifier) right: (identifier)) (binary_expression left: (identifier) right: (identifier)))))) condition: (binary_expression left: (identifier) right: (identifier)) update: (update_expression (identifier)) body: (expression_statement (assignment_expression left: (identifier) right: (method_invocation name: (identifier) arguments: (argument_list (identifier) (binary_expression left: (identifier) right: (identifier))))))) (expression_statement (method_invocation object: (field_access object: (identifier) field: (identifier)) name: (identifier) arguments: (argument_list (identifier))))) alternative: (block (expression_statement (method_invocation object: (field_access object: (identifier) field: (identifier)) name: (identifier) arguments: (argument_list (method_invocation name: (identifier) arguments: (argument_list (identifier) (identifier))))))))))