?? ???:???????????????????
????:1?????:????
2??????
3???????
4?????app
5????????
?????6????????????????19? (? ????????)??????????????????????????6???????????????19??????
??????????????????????????????? ?????:?????,????????????,???????????,???????????????
????????????:?????????????,??,??????????????????????????,?,??,???,????????,??,???????????
????????,??,???????,???????(???)
???????????????:?????????