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Task Scheduler

Given a list of CPU `tasks` (single-character labels) and an integer `n`, each task takes one unit of time and the same task must be separated by at least `n` units of cooldown. The CPU may idle. Return the minimum total units of time to finish all tasks.

Examples

in: tasks = ["A","A","A","B","B","B"], n = 2

out: 8

A B idle A B idle A B

Constraints

1 <= len(tasks) <= 10^4
0 <= n <= 100

Hints

target: O(total tasks) time⌘↩ run · ⇧⌘↩ submit