Challenge: First Non-Repeating Integer in a List

Given a list, find the first integer which is unique in the list. Unique means the number does not repeat and appears only once in the whole list. Implement your solution in Python and see if it runs correctly.

Problem Statement

Implement a function, find_first_unique(lst) that returns the first unique integer in the list.


A list of integers


The first unique element in the list

Sample Input


Sample Output


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