Question: How many piers does a harbor master need for accommodating six cruise ships S 1 , , S 6 with expected dates of

How many piers does a harbor master need for accommodating six cruise ships S₁, · · ·, S₆ with expected dates of arrival A and departure D in July, (A, D) = (10, 13), (13, 15), (16, 18), (14, 17), (12, 15), (16, 18), (14, 17), respectively, if each pier can accommodate only one ship, arrival being at 6 am and departures at 11 pm? Join S_i and S_j by an edge if their intervals overlap. Then color vertices.

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A Si 8 Sj 5 B Si 11 Sj 7 C Si 13 Sj 12 D Si 14 Sj 15 E Si 16 Sj 17 F Si 4 Sj 27 G Si 6 Sj 27 H ... View full answer

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