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sub id2path_new {
    my $id = shift or return q();
    return sprintf "%03d/$2/$3", $1 if $id =~ /(.+)(...)(...)/;
    return join "/", "00000$id" =~ /(..)(..)(..)$/;
}

sub id2path_new {
    my $id = shift or return q();
    $id =~ /(.+)(...)(...)/ or "00000$id" =~ /(..)(..)(..)$/;
    return sprintf "%0".length($3)."d/$2/$3", $1;
}

sub id2path_new {
    my $id = shift or return q();
    sprintf "%0".($id=~/(.+)(...)(...)/?3:("00000$id"=~/(..)(..)(..)$/
+,2))."d/$2/$3",$1;
}

sub id2path_new {
    $_[0]?join"/",grep{$_}"00000$_[0]"=~/0*(..)(..)(..)$|0*(.{3,})(...
+)(...)$/:q();
}