摘要:
DescriptionA network of m roads connects N cities (numbered from 1 to N). There may be more than one road connecting one city with another. Some of th... 阅读全文
摘要:
Problem DescriptionJack likes to travel around the world, but he doesn’t like to wait. Now, he is traveling in the Undirected Kingdom. There are n cit... 阅读全文