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太旧了,一根两头点着,另一根一头点着;等前一根烧完了,把后一根的另一头也点着就行了。

rabbitbug (痛苦的兔八哥)
(#300850@0)
2001-12-16 -04:00
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Back To Topic: 也出一题, 给你二根导火索, 每根可各燃1小时, 但燃烧速度不一定均匀, based on this, 请测出45分钟来.

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