Doubt in the logic of the problem

#1

https://codeforces.com/problemset/problem/1372/C

here- https://ide.codingblocks.com/s/588906

here my program logic is that I have sorted the array then checked out if the both are equal then the ans is 0

then i have checked elementwise with the given array and the sorted array and then if they are the same I have incremented the count (the no of m=nos which are in there sorted position)
then the no of exchanges is count -1

Please tell me where my logic i s wrong and what should be the approach

#2

hey @Somasree take reference from here
https://codeforces.com/blog/entry/79974

#3

ok.can u plz tell me whats wrong in my approach

#4

i haven’t seen it. try to figure out on your own once, as it’s a starting question of a contest so you will be able to do it.

#5

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