本來是這樣的:
n輛賽車,每輛車超別人的次數各不相同,被別人超的次數都相同。每輛車不會超同一輛車兩次。n可能是幾?
本來是這樣的:
n輛賽車,每輛車超別人的次數各不相同,被別人超的次數都相同。每輛車不會超同一輛車兩次。n可能是幾?
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