Why is this answer wrong

#1

https://rextester.com/ATT54938

#2

The logic for querying Segment Tree is from this page https://cp-algorithms.com/data_structures/segment_tree.html

#3

https://cp-algorithms.com/data_structures/segment_tree.html is the source for my query logic

#4

Refer this for correcting -:

#5

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