Re: [理工] [計系]101 清大資工
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第五題我算YES耶 不知道哪裏出了問題
有人也有算這題的嗎? 懇請指教
Allocation Max Need Available Total
A B C D A B C D A B C D A B C D A B C D
P0 2 3 4 4 P0 2 3 5 6 P0 0 0 1 2 1 3 2 0 4 14 14 10
P1 0 3 1 2 P1 3 6 5 6 P1 3 3 4 4
P2 0 0 1 2 P2 0 0 1 2 P2 0 0 0 0
P3 1 4 3 0 P3 4 7 5 0 P3 3 3 2 0
P4 0 1 3 2 P4 0 9 5 2 P4 0 8 2 0
Request3=(1,3,2,0) <= Need3=(3,3,2,0) OK
Request3=(1,3,2,0) <= Available=(1,3,2,0) OK
試算:
Allocation3=(1,4,3,0)+(1,3,2,0)=(2,7,5,0)
Need3=(3,3,2,0)-(1,3,2,0)=(2,0,0,0)
Available=(1,3,2,0)-(1,3,2,0)=(0,0,0,0)
Safety Algo
令Available=Work
P2先 Work=(0,0,0,0)+(0,0,1,2)=(0,0,1,2)
P0 Work=(0,0,1,2)+(2,3,4,4)=(2,3,5,6)
P3 Work=(2,3,5,6)+(2,7,5,0)=(4,10,10,6)
再來P1 P4都可以了
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