20
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0 0 0 0 1 0 1 0 0 0 0 1 0 1 0 0 0 0 0 0
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0 0 0 0 0 0 0 0 1 0 1 0 0 1 0 1 1 1 0 0
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by liangjialin @ 2017-08-12 15:05:55