Minimum Time to Collect Items from Conveyor Belt
Given a string representing a sequence of bottles ('a' for aluminum, 'b' for glass, 'c' for plastic) on a conveyor belt and an integer k, determine the minimum number of minutes required to collect at least k items of each type by picking from either end of the belt. Return -1 if impossible.
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Mid January, 2025
Junior
Minimum time to collect items from conveyor belt: Given a string representing a sequence of bottles ('a' for aluminum, 'b' for glass, 'c' for plastic) on a conveyor belt and an integer k, determine the minimum number of minutes required to collect at least k items of each type by picking from either end of the belt. Return -1 if impossible.
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