Last-minute exam cram plan

I have an exam in {{time_left}} on {{subject}}. I can study about {{hours}} hours in total. Format of the exam: {{format}}.

Topics and how confident I am (paste list below with ratings if you can): 
{{topics}}

Create a cram plan:
1. **Triage**: rank topics into "must master", "should know" and "skip if short on time", using likely exam weight and my confidence. State your assumptions about weighting.
2. **Schedule**: a time-boxed plan in blocks (include breaks and sleep), using active recall and past-paper style questions rather than rereading.
3. **For each must-master topic**: the 5 things I need to know cold, a quick self-test question, and a common trap.
4. **Memory aids**: mnemonics, patterns or one-page summary structure for the facts I need to memorize.
5. **Exam-day tactics**: how to use the first five minutes, pacing, and what to do when blanking.

Be honest about what can and cannot be learned in this time. If a topic is something you are not sure applies to my exam, mark it. Never invent exam content. If you are unsure about a fact, say so plainly. Never invent citations, quotes, statistics or URLs.