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