本来是这样的:
n辆赛车,每辆车超别人的次数各不相同,被别人超的次数都相同。每辆车不会超同一辆车两次。n可能是几?
本来是这样的:
n辆赛车,每辆车超别人的次数各不相同,被别人超的次数都相同。每辆车不会超同一辆车两次。n可能是几?
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