Showing wrong answer on 3 test cases and passing only 2 test cases

#1
#2

@chshubham97 updated your code a little look at this https://ide.codingblocks.com/s/285846.

#3

I understand the changes which you did but why we don’t use
long long int e = log2(n);
long long int ei = (1 << (e + 1)) - 1;

#4

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