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Archaeologists have discovered a new set of hidden caves in one of the Egyptian pyramids. The decryption of ancient hieroglyphs on the walls nearby sh... 阅读全文
摘要：
You are given n rods of length 1,2, . . . , n. You have to pick any 3 of them and build a triangle. Howmany distinct triangles can you make? Note that... 阅读全文
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In most professional sporting events, cheerleaders play a major role in entertaining the spectators. Theirroles are substantial during breaks and prio... 阅读全文
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D. The Union of k-SegmentsYou re givennsegments on the coordinate axisOxand the numberk. The point issatisfiedif it belongs to at leastksegments. Find... 阅读全文