"An analogy is that if fares are atoms, priceable units are the molecules used to build complete tickets. It's not entirely correct, but a good working intuition is that a priceable unit is the smallest group of flights and fares that could be sold on their own." "Fare rules are expressed in an extremely complicated and baroque electronic language, built from hundreds of parameterized predicates joined by sometimes bizarre logical combinators"
"For a travel query, find the best solution: A set of flights that satisfies the travel query, A set of fares that covers all the flights exactly once, A partition of the fares into priceable units. For each fare, solution must satisfy fare's rules."
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어 그러네, fares를 먼저 찾고 그걸 priceable units으로 조합하는게 당연하네. 지금까지 반대로 생각하고있었네.