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样例是不是有错啊1 3 3 100 25 150 35 80 25 2 120 80 155 40 2 100 100 120 110 如果选择80 25 120 80 100 100 sum(B)=205 sum(P)=300 B/P=0.683 为什么是0.649 Followed by:
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