I have cleared the OA, thanks to LeetCode. My interviews are scheduled in a week.
Given the Amazon interviews are seasonal, which topics should I invest my time practicing/revising these last few days? I am going through, Leadership Principles. I am worried about technicals because I had only one month of prep.

Should I concentrate on DP, graphs and greedy, or go for other topics like backtracking, stacks and queues? Frankly, there are 600 questions of which I have solved only 250+. I am far from being confident.
Should I vote for System Design (although, this topic being fairly open ended, there's nothing much I can do at this point)?