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1
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1
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2
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3
锛夌敱鍥?/p>
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1
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=
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2
15
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x
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69
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2-1
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2
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0.6
x
x
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锛屽嚱鏁板�间负銆?/p>
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5
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1
2
20
3
8
3
x
x
飪?
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锛屽嚱鏁板�间负
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1
2
1
2
3
max
3
2
0
0
0
f
x
x
s
s
s
飥?/p>
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