???
???
??? ??? ????? 50? ??? ???? ??? ??? ??? ???? ??? ???.
26? ????? ??? 25? ?? 2?20?? ??? ?? ?? ????? ???(55·?)? ??? ????.
?? ? ???(55)? ??? ???? ???? ????? ????.
???? ??? 80m ???? ???, ??? 10m ?? ???? ??? ?? ??? ??? ???? ???? ??? ?? ???? ??? ??? ??? ?? ??? ????.
?(???=??1)