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Thank you both for pointing out that I need to learn how to do subqueries to get this to work.
I don't know how to do those and I'd never think that I'd have to learn something that hadn't been mentioned in any problem previously to do "basic joins".
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I agree, the instructions are not explicit in asking us to do a subquery to find the minimum coins needed.
Thank you both for pointing out that I need to learn how to do subqueries to get this to work.
I don't know how to do those and I'd never think that I'd have to learn something that hadn't been mentioned in any problem previously to do "basic joins".