There are two interviews, each 1.5 hours long.

At each interview, you will meet two interviewers.

The answer is given in two weeks (yes or no).

After two technical interviews, there is a job offer.

Usually, at the second interview, you will meet the hiring manager, but it can be another manager at the same level.

The question varies. I was asked to solve the following riddle:

10 people were kidnapped by aliens. The aliens want to eat all 10 people, but they say they don't eat highly intelligent species. To test them, they will give a hat colored white or black to each one of the kidnapped individuals.

After that, the 10 people will stand one after another by height, the tallest person first and the shortest last. This way, each person sees only those shorter than them.

The number of black/white hats is random. They have 10 minutes to discuss a strategy, and afterward, one by one, they must guess the color of their own hat. They can only say "black" or "white." They must guess correctly at least 9 out of 10, otherwise, they will be eaten.

Describe the strategy.