public static void main ( String [ ] args ) {
  Scanner sc = new Scanner ( System . in ) ;
  double P = sc . nextDouble ( ) ;
  double left = 0 ;
  double right = Long . MAX_VALUE ;
  for ( int i = 0 ;
  i < 200 ;
  i ++ ) {
    double x1 = ( left * 2 + right ) / 3 ;
    double x2 = ( left + right * 2 ) / 3 ;
    if ( f ( P , x1 ) > f ( P , x2 ) ) {
      left = x1 ;
    }
    else {
      right = x2 ;
    }
  }
  System . out . println ( f ( P , left ) ) ;
}

public static void main ( String [ ] args ) { Scanner sc = new Scanner ( System . in ) ; double P = sc . nextDouble ( ) ; double left = 0 ; double right = Long . MAX_VALUE ; for ( int i = 0 ; i < 200 ; i ++ ) { double x1 = ( left * 2 + right ) / 3 ; double x2 = ( left + right * 2 ) / 3 ; if ( f ( P , x1 ) > f ( P , x2 ) ) { left = x1 ; } else { right = x2 ; } } System . out . println ( f ( P , left ) ) ; }
(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: (type_identifier) declarator: (variable_declarator name: (identifier) value: (object_creation_expression type: (type_identifier) arguments: (argument_list (field_access object: (identifier) field: (identifier)))))) (local_variable_declaration type: (floating_point_type) declarator: (variable_declarator name: (identifier) value: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list)))) (local_variable_declaration type: (floating_point_type) declarator: (variable_declarator name: (identifier) value: (decimal_integer_literal))) (local_variable_declaration type: (floating_point_type) declarator: (variable_declarator name: (identifier) value: (field_access object: (identifier) field: (identifier)))) (for_statement init: (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (decimal_integer_literal))) condition: (binary_expression left: (identifier) right: (decimal_integer_literal)) update: (update_expression (identifier)) body: (block (local_variable_declaration type: (floating_point_type) declarator: (variable_declarator name: (identifier) value: (binary_expression left: (parenthesized_expression (binary_expression left: (binary_expression left: (identifier) right: (decimal_integer_literal)) right: (identifier))) right: (decimal_integer_literal)))) (local_variable_declaration type: (floating_point_type) declarator: (variable_declarator name: (identifier) value: (binary_expression left: (parenthesized_expression (binary_expression left: (identifier) right: (binary_expression left: (identifier) right: (decimal_integer_literal)))) right: (decimal_integer_literal)))) (if_statement condition: (parenthesized_expression (binary_expression left: (method_invocation name: (identifier) arguments: (argument_list (identifier) (identifier))) right: (method_invocation name: (identifier) arguments: (argument_list (identifier) (identifier))))) consequence: (block (expression_statement (assignment_expression left: (identifier) right: (identifier)))) alternative: (block (expression_statement (assignment_expression left: (identifier) right: (identifier))))))) (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))))))))