int read_data( FILE *fp,char *string_vars,int *int_vars,
float *fl_vars, int **arraysi,float **arraysf,
float *xmin,float *xmax, float *ymin,float *ymax,
int *current, int req,int *maxrec,int rotate )
#endif
{
int i,err=0,read=0,rec_num=0,rotate_velocity=1;
long curr_pos;
struct stat buf;
curr_pos = ftell( fp );
if (*current>req) {
rewind( fp );
*current=0;
}
rec_num = *current;
while (rec_num<req-1) {
if (err=skip_data_blk( fp )) {
if (err==EOF_ERR) *maxrec = rec_num;
return( err );
}
else rec_num++;
}
if (err=read_data_blk( fp,string_vars, int_vars,fl_vars,arraysi,arraysf)) {
if (err==READ_ERR) {
clear_arrays();
rewind( fp );
*current=0;
}
else if (err==EOF_ERR) {
*maxrec = rec_num;
fseek( fp,curr_pos,SEEK_SET );
}
return( err );
}
/*if (req==1) {*/
if (*maxrec==0) {
curr_pos = ftell( fp );
err = fstat(fileno(fp),&buf);
*maxrec = buf.st_size/curr_pos;
}
*current = req;
if (rotate) {
swapco_(arraysf[EX],arraysf[EY],arraysf[UVP],
&int_vars[NUP],&rotate,&rotate_velocity );
if (int_vars[ILAG]) {
rotate_velocity = 0;
if (int_vars[ILAG]==1||int_vars[ILAG]==3)
swapco_(arraysf[EXLG],arraysf[EYLG],NULL,
&int_vars[NUL],&rotate,&rotate_velocity );
i = int_vars[NSM] * int_vars[NPM];
if (int_vars[ILAG]==1||int_vars[ILAG]==2)
swapco_(arraysf[STELPX],arraysf[STELPY],NULL,
&i,&rotate,&rotate_velocity );
}
}
find_max_min(arraysf[EX],arraysf[EY],int_vars[NUP],xmin,xmax,ymin,ymax);
return( 0 );
}
int main()
{
int i, q, a, b, h, M;
Node nd;
scanf("%d %d", &n, &q);
for (i = 1; i <= n; i++) {
scanf("%d", &h);
f[i][0].Max = f[i][0].Min = h;
}
build_tree();
for (i = 0; i < q; i++) {
scanf("%d %d", &a, &b);
nd = find_max_min(a, b);
printf("%d\n", nd.Max - nd.Min);
}
return 0;
}
