Given an unsorted array, nums, your task is to return the length of the longest consecutive sequence of elements. The consecutive sequence of elements is such that there are no missing elements in the sequence. The consecutive elements can be present anywhere in the input array.

Note: Two elements, $x$ and $y$, are called consecutive if the difference between them is equal to $1$.

Constraints:

• $0 \leq$ nums.lengths $\leq 10^{3}$
• $-10^{6} \leq$ nums[i] $\leq 10^{6}$

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We have a game for you to play. Rearrange the logical building blocks to develop a clearer understanding of how to solve this problem.

Implement your solution in main.py in the following coding playground. The supporting code template provided in union_find.py is meant to assist in developing your solution to the problem.