Error in poblem 3d structure

#1

I am trying to solve the question 3d structure on hackerblock.
https://hack.codingblocks.com/app/practice/2/632/problem
please tell me why my code is giving me error


Approach i used to solve it is that i create a hashmap which will contain x,y,z as key and its update value as it value and when a query is given ,we search in the map whether the coordinate is present in between the coordinates of query.If yes ,include it.

#2

@TusHar-AroRa-2294450460870717 hey your logic is incorrect . You need to solve this question using fenwick tree.

#3

How is it incorrdect.Please explain.
I stored the updated values in the list and whenever a query comes,i check out whether the coordinates of list lie the range of query coordinates or not.If it lies,then add it to the sum.
Finally i printed the sum

#4

@TusHar-AroRa-2294450460870717
yes you are right you logic is correct. i have corrected and simplified your code.

#5

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