How calculating p2 vector as for my cde

#1 
s.queryMin(0,8);

Give segmentation fault as our range is of legth 9 and in
pw=p2(8) gives 4

and 2^4==16 but sir has taught to find min in this same way but it will going to give segmentation fault in many cases

#2

and will work for
s.queryMin(0,7);

But how to do for other such as (0,9)

#3

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#4

You have not even replay yet ??

#5

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#6

Please Help still does not got how to calculate for legnth greater than 8 as in pw calculation?