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Product Requirement Document ?????????????? ????????????? ?????? ?????35 ??? ??? ?? ?35???????? ?????? ?????? ??????? 35??????????? ?????????? ???? ???????????? ??????????? ???????????? ?????? ???? ???? ?????? ?????? ????? ???? ???? ????????? ?????????? ???? ??? ???? 30 5 4$ 20 % ?????????????? ????? ?????? 35 ?????? ???? ???? ?????????? 35????? ?????????? ????????? ??????? ????? ?????? ???????????? ???????????? ?? ?????????????? ???? ?? ?? ?????? ?????? ?? ???? ???? ???? ???? ???? ???? ?????? 35??? ????35 ???????? ????? 35????