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Description In Korea, the naughtiness of the cheonggaeguri, a small frog, is legendary. This is a well deserved reputation, because the frogs jump thr 阅读全文
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Description Farmer John's cows, pampered since birth, have reached new heights of fastidiousness. They now require their barn to be immaculate. Farmer 阅读全文
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Description A 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 t 阅读全文
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Description Farmer John's N (1 include include include include include define RG register define il inline define iter iterator define Max(a,b) ((a) ( 阅读全文