Doubt in--"Shil and Palindrome Research"

#1

I am not able to detect error in my code.link to my code is–https://ide.codingblocks.com/s/81177

#2

are you getting all correct except first test case?

#3

I’m getting all wrong ans in all test cases

#4

use 26 binary index trees, actually i mean is use array of binary index trees.
and then check occurences for all the characters , if the odd occurences are more than one then palindrome cant be formed.

#5

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