Leetcode 1578. Minimum Time to Make Rope Colorful

Given a string of balloon colors and a removal cost per balloon, remove balloons so no two adjacent colors are equal while minimizing total removal time. The core challenge is to process runs of equal-colored balloons and, using a greedy linear scan, remove all but the highest-cost balloon in each run (n up to 1e5).

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Leetcode 1578. Minimum Time to Make Rope Colorful

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