I was contacted through LinkedIn by multiple people from a recruiting agency in Mexico using a single personal account. They had no idea they had already contacted me. I noticed their recruiting agency was very disorganized from the beginning.

There was a test in HackerRank which had a very obvious error in the test cases. The input array was always missing one value, so obviously none of the tests passed.

I provided screenshots about it where it was very clear, but the recruiters had no idea about the HackerRank platform. So it was a negative result and a waste of time.

The problem was about finding the minimum amount of water fountains required to fully cover all of the positions of land, given an array with fountain coverages.

For every test case, the input said it had N values, but when logging the input, there were always N - 1. After noticing this, I didn't even bother to finish it.