20???100 ??????? ????? ??! ??????? -20 ??? 100 ???? ???? ??? ???? ???? ????? ??? ????? ???? ????????? ??? ??? ?????? ??? ???????? ?????? ????? user-friendly ?????? ????????????! 20 ??? ????? 100 ??? ??????? ?????????? ??????? ???????? ?????????? ????? ????? ????? ??????? ?????? 20 ??? 100 : ?????? ??? ???? ?