why don’t these weeks add up?
Obi-Wan meets Java
Arpith Siromoney

Let’s look at a week that looks like {1, 2, 3, 4}. In the next week, we can wear shirt 4 on day 3 — but we can also wear shirt 2 on day 4, and shirt 3 on day 2, since all these “moves” can be done in a week. The next week will now look like {1, 3, 4, 2}.

This means the mission can be done in the number of weeks it takes to make the longest move (every other move can be made within this period).

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