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【杭电】[5748]Bellovin

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【杭电】[5747]Aaronson

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【杭电】[1052]Tian Ji -- The Horse Racing

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【CodeForces】[698A]Vacations

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【CodeForces】[629B]Far Relative’s Problem

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【POJ】[1328]Radar Installation

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【杭电】[1789]Doing Homework again

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【杭电】[2124]Repair the Wall

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【杭电】[1009]FatMouse' Trade

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【NYOJ】[1143]小珂的苦恼

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【POJ】[1006]Biorhythms

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【CodeForces】[580B]Kefa and Company

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【CodeForces】[599B]Spongebob and Joke

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【CodeForces】[612B]HDD is Outdated Technology

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【CodeForces】[597B]Restaurant