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Problem AAlgebraic TeamworkThe great pioneers of group theory and linear algebra want to cooperate and join their theories. In group theory, permutati... 阅读全文
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Problem GJewelry ExhibitionTo guard the art jewelry exhibition at night, the security agency has decided to use a new laser beam system, consisting of... 阅读全文
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Problem HJuQueenJuQueen is the super computer with the best performance allover Germany. It is on rank 8 in the famous top500 list with its 458752 cor... 阅读全文