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1.8a+8.8b+1.7c=1000,2.1a+1.9b+2.0c=500,1.7a+2.0b+4.7c=500
1.8a+8.8b+1.7c=1000,2.1a+1.9b+2.0c=500,1.7a+2.0b+4.7c=500
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