?? ???? ???????? ?????? ????????? ?? ??????. '(??, ?? ??) ??????'?? ???????? ???? ??????????? ????? ???? ???? ???????? ???????????????????? ???? ?? ???? ??? ?? ?? ?????? ?????? ?????? ???? ???????? ?????????? ???????????? ?????? ???????????? ???? ??_????????????? ????????? ?? ?????? ??? ??????. ?????? ???? ?????= Time/interval which you could get