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if all roads are directed,it can be have circle.

Posted by lzpsky at 2007-03-06 16:18:26 on Problem 3204

这问题到底有向还是无向?!

Followed by:

refer to any books on graph theory and that will gain you some understanding. (17) frkstyc 2007-03-06 16:33:40
- Re:refer to any books on graph theory and that will gain you some understanding. (29) lzpsky 2007-03-06 16:51:01

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