Not able to reduce complexity

#1

help me to reduce complexity

#2

sir this is the code and i am not able to find why does is give tle

#3

hello @singh.pankhil40

if u observe the given hash function then u will find that everytime a number repeats, it is given a new hash value, which is equal to the number of distinct numbers occurred till now. So we can just store the last occurrences of all the numbers and assign the values incrementally, in increasing order of the positions of their last occurrences.

concept video->