Verkada Tech Phone Screen: Camera Failure Aggregation Problem

Let's jump straight to the problem. The following content requires a score higher than 188. You can already view it. It's a variation of the "camera group" problem from the forum. We have a string "or

Let's jump straight to the problem. The following content requires a score higher than 188. You can already view it. It's a variation of the "camera group" problem from the forum. We have a string "organization, site, camera" indicating that a camera failed. We can also input "site fail" or "organization fail". The input is an array representing how many different camera, site, or organization failures there are. The task is to find which ones failed after merging them. For example, if the input is ["o1,s1,c1","o1,s1","o1,s2,c1"], the output would be ["o1,s1","o1,s2,c1"]. This is because once a higher-level camera has failed, we can directly merge the failures of that camera. Please read this post!