consider a hard disk device with $600$ cylinder $[0-599]$ for the questions $.$if the head initially serves a request cylinder number $436$ and receives the l$/$O disk request shown below

Assume that once l$/$O disk requests and serviced, the will not make any other movement $.$ when

having a tie FCFS $.$ l$/$O disk request: $\{308,96,109,550,430,95,12,559,425,131\}$

b$)$if using shortest seek time first $($SSTF$),$what is total head movement cost is $($is cylinder$)?$

c$)$if using SCAN scheduling algorithm $($Moving to the left direction, towards lower cylinder numbers$),$what is total head movement cost $($is cylinder$)?$

d$)$if using LOOK scheduling algorithm $($Moving to the left direction, towards lower cylinder numbers$),$what is total head movement cost $($is cylinder$)?$