No.1 ??? ????????? ??? IOI997 ??? ?? ????? ????? ????????? ????? ????? ????????. ????? ??? ?????????? ???????? ?? 24??????? ???? ??????????? ??? ???????????? ??????????????????????? ???????????? ??????????? ?????? ??? ioi997 .??????????????????? ?????????? . ??????????? ????? ??? ???????? ??