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Description In Absurdistan, there are n towns (numbered 1 through n) and m bidirectional railways. There is also an absurdly simple road network — for 阅读全文
posted @ 2018-01-09 17:07
爱国呐
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Description An infinitely long railway has a train consisting of n cars, numbered from 1 to n (the numbers of all the cars are distinct) and positione 阅读全文
posted @ 2018-01-09 16:52
爱国呐
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