[falcolas]

> I even contacted them and told them so but did not get much response.

Probably because it's much easier to rank a algorithmic solution. The question of "does your code compute the correct answer in the allocated compute time" provides a nice clear answer. Solving business problems in elegant ways, on the other hand, takes a human to judge, and the results are not always clear.

The difference in the difficulty grading the two is exactly why the former is so popular as an interview technique (requires low effort to get a binary answer), and the latter is better at actually judging an applicant (reflects the human behind the test).