sub b {
$M = scalar keys %t;
$m = $M *= $M;
foreach ( keys %t ) {
$r = c( $_ );
($m,$n) = ($r, $_) if ($r < $m );
}
$n;
}
sub c {
@s=@_;
%b = ( $s[0] => $b=$sum=0 );
while ( @s > 0 ) {
$b ++;
@s = grep { ! exists( $b{$_} ) }
map { @{$t{$_}} } @s;
@b{ @s } = ($b) x scalar(@s);
$sum += $b * scalar(@s);
return $M if $sum > $m
}
$sum;
}
####
sub b{$M=$m=@_*@_;for(keys %t){$r=c($_);($m,$n)=($r,$_)if($r<$m)}$n}sub c{%b=($_[0]=>$b=$sum=1);while(@_){$b++;@_=grep{!$b{$_}}map{@{$t{$_}}}@_;@b{@_}=($b)x@_;$sum+=$b*@_;return$M if$sum>$m}$sum}
##
##
sub b{$M=$m=@_*@_;for(keys %t){$r=c($_);($m,$n)=($r,$_)if($r<$m)}$n}sub c{%b=($_[0]=>$b=$sum=1);while(@_){$b++;@_=grep{!$b{$_}}map{@{$t{$_}}}@_;@b{@_}=($b)x@_;$sum+=$b*@_}$sum}