CLASS zcl_darts DEFINITION
  PUBLIC
  FINAL
  CREATE PUBLIC .

  PUBLIC SECTION.
    METHODS score
      IMPORTING
        x             TYPE f
        y             TYPE f
      RETURNING
        VALUE(result) TYPE i.
  PROTECTED SECTION.
  PRIVATE SECTION.

ENDCLASS.


CLASS zcl_darts IMPLEMENTATION.
  METHOD score.
    " add solution here
  ENDMETHOD.


ENDCLASS.