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Leetcode 983. Minimum Cost For Tickets

Given sorted travel days and prices for 1-, 7-, and 30-day passes, choose which passes to buy to cover every travel day at minimum total cost. This is a DP/interval-covering optimization: compute the minimum cost to cover days by considering, for each travel day, buying each pass type that covers a range of future days.

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Leetcode 983. Minimum Cost For Tickets | Hello Interview