Here, $/$ is the root directory; $$dir$1,$dir$2,$dir$3,$dir$4,$dir$5,$dir$6,$dir$7,$dir$8,$

$$dir$9,$dir$10,$dir$11,$dir$12$ and $$dir$13$ are directories; $$file$1,$file$2,$file$3,$file$4,$file$5$

are regular files.

Suppose we have known that the inode numbers of $/,$dir$1,$dir$2,$dir$3,$dir$4,$dir$5,$

$$dir$6,$dir$7,$dir$8,$dir$9,$dir$10,$dir$11,$dir$12,$dir$13,$file$1,$file$2,$file$3,$file$4$ and

$$file$5$ are $0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17$ and $18$ respectively.

Each directory occupies only one data block $($each data block is $4$KB$),$ and the data blockHere, $/$ is the root directory; $$dir$1,$dir$2,$dir$3,$dir$4,$dir$5,$dir$6,$dir$7,$dir$8,$

$$dir$9,$dir$10,$dir$11,$dir$12$ and $$dir$13$ are directories; $$file$1,$file$2,$file$3,$file$4,$file$5$

are regular files.

Suppose we have known that the inode numbers of $/,$dir$1,$dir$2,$dir$3,$dir$4,$dir$5,$

$$dir$6,$dir$7,$dir$8,$dir$9,$dir$10,$dir$11,$dir$12,$dir$13,$file$1,$file$2,$file$3,$file$4$ and

$$file$5$ are $0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17$ and $18$ respectively.

Each directory occupies only one data block $($each data block is $4$KB$),$ and the data block