Avoid Wasting

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Today Tomya buys N retort pouches of food in Chef Ciel's restaurant. The i-th retort pouch contains Vi units of food, and its use-by date is the Ui-th day (1-origin). Moreover, food from the i-th retort pouch can be eaten only within Li days after it was opened. Namely, if Tomya will open the i-th retort pouch on the xi-th day, she can eat food units from it on the k-th day if and only if xi ≤ k ≤

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solution.cppC++17

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