sub p{$_=pop@n}sub w{push@n,@_}$/=$T;$_=uc<>;s#.#+{qw(E 7$0=p;p;w+int$_/$0,$_%$0
H 0p;w$n[-1-abs];$_>0&&splice@n,-2-$_,1 I 4w+($_=getc)?ord:-1 A 2w$L+1 N 5w$N++
S 6w-(p)+p O 3print+chr(p) T 1$t=p;p&&goto"L$t")}->{$&}=~/./&&"~\$N?$&>6?\$N=0:
w $&+7*p:do{$'};"#eg;s/~/L${\++$i}:\$L=$i;/g;eval