public static void main ( String [ ] args ) {
  Scanner input = new Scanner ( System . in ) ;
  double n = input . nextDouble ( ) ;
  double p = input . nextDouble ( ) ;
  double q = input . nextDouble ( ) ;
  double res = p * n / ( p + q ) ;
  if ( res % 1 != 0 ) System . out . printf ( Locale . UK , "%.4f\n" , res ) ;
  else System . out . printf ( "%d\n" , ( int ) res ) ;
}

public static void main ( String [ ] args ) { Scanner input = new Scanner ( System . in ) ; double n = input . nextDouble ( ) ; double p = input . nextDouble ( ) ; double q = input . nextDouble ( ) ; double res = p * n / ( p + q ) ; if ( res % 1 != 0 ) System . out . printf ( Locale . UK , " % .4f \n " , res ) ; else System . out . printf ( " % d \n " , ( int ) res ) ; }
(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: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list)))) (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: (binary_expression left: (binary_expression left: (identifier) right: (identifier)) right: (parenthesized_expression (binary_expression left: (identifier) right: (identifier)))))) (if_statement condition: (parenthesized_expression (binary_expression left: (binary_expression left: (identifier) right: (decimal_integer_literal)) right: (decimal_integer_literal))) consequence: (expression_statement (method_invocation object: (field_access object: (identifier) field: (identifier)) name: (identifier) arguments: (argument_list (field_access object: (identifier) field: (identifier)) (string_literal) (identifier)))) alternative: (expression_statement (method_invocation object: (field_access object: (identifier) field: (identifier)) name: (identifier) arguments: (argument_list (string_literal) (cast_expression type: (integral_type) value: (identifier))))))))