#include<stdio.h>
#include<stdlib.h>
int main()
{
 int r[100],i,n,Tst=0,initial;
printf("Enter the number of Requests\n");
scanf("%d",&n);
printf("Enter the Requests sequence\n");
 for(i=0;i<n;i++)
scanf("%d",&r[i]);
printf("Enter initial head position\n");
scanf("%d",&initial);
 // logic for FCFS disk scheduling
 for(i=0;i<n;i++)
 {
Tst=Tst+abs(r[i]-initial);
 initial=r[i];
 }
printf("Total head moment / Total Seek time is %d",Tst);
 return 0;
  }