Filling the Coffers

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Gringotts Wizarding Bank in Diagon Alley is the most trusted (and only) bank in the wizarding world. The bank can be described as a series of N vaults, numbered from 1 to N, each holding ci Galleons, 1 i, 1i coins is opened with a key having a value of ki, 1 i*ki coins are obtained. Rodo is lazy, so he only accesses a contiguous set of vaults, opening them with keys in the order of the indices of

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solution.cppC++17

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