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Problem Description Pixels in a digital picture can be represented with three integers (R,G,B) in the range 0 to 255 that indicate the intensity of th 阅读全文
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Problem Description Alice and Bob are playing a game. In this game, there are n straight lines on the 2D plane. Alice will select exactly k straight l 阅读全文
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Problem Description Chenjb is struggling with data stucture now. He is trying to solve a problem using segment tree. Chenjb is a freshman in programmi 阅读全文