摘要：
POJ1935 JourneyTime Limit:1000MSMemory Limit:30000KTotal Submissions:1239Accepted:445DescriptionThere are n cities in Byteland (numbered from 1 to n), connected by bidirectional roads. The king of Byteland is not very generous, so there are only n-1 roads, but they connect the cities in such a way t 阅读全文
posted @ 2011-09-22 18:54
Fatedayt
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