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回复：囚 犯 问 题 新 版 (自 编 )[:D)]
Let n = number of current on switches, and a = n mod 15.If a is odd,turn on (15-a)/2 switches and turn off (15+a)/2 switches. If a = 0, turn off 15 switches. If a is even and > 0, turn on 7 and turn off 8 so it becomes odd.
Are there really bad prisoners that should not be released? If so, we change the rule to 14 switches every prizoner, but turn on an odd number of lights at the beginning. :)www.ddhw.com
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哈哈哈哈 O(∩_∩)O哈哈~ 好久不来了，不小心看了一眼自己主页，发现自动关联了自己以往发过的帖，点进这个看了一眼，笑个半死。。。敢情我当初还发过这么搞笑的东西啊，我自己完全不记得了 
雷达卡
发表于 2005-4-22 23:38:41