Exercise 4.13

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Older Dog
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Exercise 4.13

Post by Older Dog »

4-13. [5] A camera at the door tracks the entry time ai and exit time bi (assume bi > ai) for each of n persons pi attending a party.
Having difficult time figuring out this "each of n persons pi". In particular, what is "pi"?
Oh, I think, I see. Total party time?
I don't see, though, why it's needed in this context.
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