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Problem DescriptionA lot of battleships of evil are arranged in a line before the battle. Our commander decides to use our secret weap... 阅读全文
posted @ 2015-05-29 19:29
Herumw
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Problem DescriptionChinese always have the railway tickets problem because of its' huge amount of passangers and stations. Now goverme... 阅读全文
posted @ 2015-05-29 12:45
Herumw
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Problem DescriptionAstronomers often examine star maps where stars are represented by points on a plane and each star has Cartesian co... 阅读全文
posted @ 2015-05-29 10:03
Herumw
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