????:1???app????:??????

2???????????

3???????

4??????????

5???????????

???2?????????????????5??????????????? (?? ????)????????????????????????5???????

????????

?:????????,??,??????????????????????????,????????????????????

??????????,?????,?????

???50???????????,????????????,????,???,?50?????????????????????,??????????,??????????,??????????????,???????????,???????????????,????????,???(??) ??????????:???