DP solutions were really in vogue for awhile, and seem to be asked less now. I heard a completely unsubstantiated rumor that FB found them to cause high false n

DP solutions were really in vogue for awhile, and seem to be asked less now. I heard a completely unsubstantiated rumor that FB found them to cause high false negatives because they're such a tricky and specific problem type. Also, once you know the "one trick" to solving them they don't help illuminate candidate thinking.