digit --- $B?t;zH/@<!J0l7e$:$D!KMQJ8K!(B
=====================================

$B"!J8Nc!'(B
--------------------------------------------------
$B$"$N!<!$#5#3#7$G$9!%(B
$B#1#2#3$N#4#5#6#7$G$9!%(B
--------------------------------------------------

$BG$0U7e$N?t;z$NI=8=$r<uM}$7$^$9!%(B
$B?t;z$O==?J?t$G$O$J$/!$0l7e$:$D$NH/@<$r<uM}$7$^$9!%(B
$B!JNc!'!V#5#8!W$O!V$4$8$e$&$O$A!W$G$O$J$/!V$4!<$O$A!W!K(B
$B>e5-$NNc$N$h$&$K!$?t;z$N4V$K!V$N!W$,F~$C$F$b$+$^$$$^$;$s!%(B
