get data from website using something like beautifulsoup

wait am i having the same O(n^2) issue when using ints.slice(0,i) in my JS solution?

ints[0:index] is creating a copy of the list on each loop and searches linearly, making your solution O(n²). You need a better data structure with faster lookups.

Mind sharing your code? You can mark it as a spoiler and we can help take a look to see where your approach is eating up time.