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Problem Description Today is army day, but the servicemen are busy with the phalanx for the celebration of the 60th anniversary of the PRC.A phalanx i 阅读全文
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Problem Description FatMouse believes that the fatter a mouse is, the faster it runs. To disprove this, you want to take the data on a collection of m 阅读全文
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Problem Description Tom owns a company and he is the boss. There are n staffs which are numbered from 1 to n in this company, and every staff has a ab 阅读全文