🚀 go-pugleaf

$@$O$8$a$^$7$F(J $@B<ED(J@$@KLN&@hC<Bg(J ($@G=EPH>Eg$N@h$K$"$k$s$8$c$J$$$h(J)$@$H$$$$$^$9!%(J
$@$5(J$@$FLdBj$G$9!%(J

$@J?LL>e$NM?$($i$l$?(J2$@E@(J [0 1] [0 -1] $@$N4V$r(J 
2(=N) $@K\$N6J@~(J S1 S2 $@$,DL$C$F$$$^$9!%(J
$@$=$l$>(J$@$l$N6J@~$ON>$H$J$j$NJ*BN(J($@6J@~$+E@(J)$@$H$N5wN%$r$G$-$k$@$1(J
$@Bg$-$/$H$k$h$&$K<+F0E*$K0\F0$7$^$9!%7k6I(J2$@$D$N5w(J$@N%$OEy$7$/$J$j$^$9!%(J

$@$3$N6J@~$O$I$s$J6J@~$G$7$g$&(J?

($@GX7J(J)
$@5nG/$N=):"!$;W$$Ib$+$s$@LdBj$J$N$G$9$,!$(J
$@;~4V$,2r7h$9$k$H;W$C$F$$$?$N$K!$$:$C$H$N$I$N$*$/$K;I$5$C$?$^$^$J$N$G$9!%(J

($@9M;!(J)
N=1 $@$J$i!$(JS1 $@$O(J $@D>@~(J y=0 $@$G$9$h$M!%(J
N=3$@$J$i!$BP>N@-$+$i(J S2 $@$OD>@~(J y=0 $@$G!$(JS1 $@$H(J S3 $@$O(J $@>e2<H?E>$NF1$87A$G!$(J
$@$9$3$77W;;$9$k(J$@$H$?$7$+(J $@J|J*@~(J $@$K$J$j$^$7$?!%(J
N=2$@$N$H$-$,$o$+$i$J$$!%(J
$@$b$A$m$s!$(JN > 3 $@$N$H$-$b$o$+$i$J$$!%(J

($@JdB-(J)
$@$b(J$@$&$9$3$7!$7A<0E*$KLdBj$N@_Dj$r=R$Y$F$_$^$9!%(J

--- $@$3$3$+$i(J ------------
\begin{document}
$@<+A3?t(J $N$ $@$H(J$@!$(J2$@<!85%f!<%/%j%C%I6u4V(J $X = E^2$ $@$NFs$D$NE@(J
$p_1 = (0,1),p_2 = (0,-1)$$@$,M?$($i$l$F$$$^$9!%(J
1$@E@$+$i@.(J$@$k=89g$r(J2$@$DDj5A$7$^$9!%(J
\begin{eqnarray*}
	S_0 = \{p_1\} \\
	S_{N+1} = \{p_2\}
\end{eqnarray*}
$N$$@K\$N(J$@6J@~(J$S_i,(i=1,2,\ldots,N)$$@$r<!$N$h$&$KDj5A$7$^$9!%(J
\[
S_i = \{p | \forall p \in X, 
	  \min_{q \in S_{i-1}}\|pq\| = \min_{r \in S_{i+1}}\|pr\|\}
\]
$@$3$3$G!$(J$\|pq\|$$@$N5-K!$O(J2$@E@4V$N5wN%$rI=$7$F$$$^$9!%(J

$N=2$$@$N$H$-$K$D$$$F!$(J$S_1$$@$r(J$f(x,y)=0$$@$N7A$KI=8=$7$F$/$@$5$$!%(J

\end{document}
----- $@$3$3$^$G(J -------

$@$h$m$7$/!%(J


--
 ------------------------------------
 $@B<ED(J $@MN(J $@!wKLN&@hC<2J3X5;=QBg3X1!Bg3X(J