The Chinese remainder Theorem is the first thing coming into my mind. However, it is too hard to be done in 90 minutes... The first claim is hard to find out.....Although I was thinking about some similar things..........www.ddhw.com
Well, I think this kind of problem should still be welcomed...
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 2005-2-20 13:12:49