Alice Potter and Wingardium Leviosa

Alice wants to clean up the mess in her room. She has $N$ objects in her room, numbered from $1$ to $N$. Each object must be in its place. In other words, $i^{th}$ object should be in the $i^{th}$ location. Currently, the object with the index $P_i$ is in the $i^{th}$ location. To move the objects, Alice can use the spell `Wingardium Leviosa`. To perform it: - She needs to specify $N$ **diff