Imagine hamsters lined up in a row! You need to place food buckets so every hamster gets fed, but buckets can't be next to each other or next to houses. Find the fewest buckets you need.

You're planning a trip and need to buy tickets for specific travel days. Given the costs for 1-day, 7-day, and 30-day passes, determine the minimum total cost to cover all your travel days.

Simulate addition with base -2 using the given arrays representing two negabinary numbers. Return the result as a negabinary array, ensuring no leading zeros.