Minimum range of 3 sets

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Published on 2010-05-18T10:00:11Z Indexed on 2010/05/18 10:20 UTC
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We have three sets S1, S2, S3. I need to find x,y,z such that x E S1 y E S2 z E S3

let min denote the minimum value out of x,y,z let max denote the maximum value out of x,y,z The range denoted by max-min should be the MINIMUM possible value

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