?????? ??? ????????? ??? ioi997 ???? ?? ???? ???????? ??????? ????? ????????? ??????. ???????????? ??? ?????????? ??????? ??????? 24??. ???? ?????????? ??? ???????????? ??????????????????????? ???????????? ??????????? ?????? ??? ioi997 . ????? ????? ?????????? . ??????????? ????? ??? ????????? ???! ??? ????? ioi997 ???????????????? ????