摘要:
Human Gene FunctionsTime Limit:1000MSMemory Limit:10000KTotal Submissions:15269Accepted:8469DescriptionIt is well known that a human gene can be considered as a sequence, consisting of four nucleotides, which are simply denoted by four letters, A, C, G, and T. Biologists have been interested in iden 阅读全文
摘要:
PearlsTime Limit:1000MSMemory Limit:10000KTotal Submissions:6383Accepted:3084DescriptionIn Pearlania everybody is fond of pearls. One company, called The Royal Pearl, produces a lot of jewelry with pearls in it. The Royal Pearl has its name because it delivers to the royal family of Pearlania. But i 阅读全文
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AlignmentTime Limit:1000MSMemory Limit:30000KTotal Submissions:10804Accepted:3464DescriptionIn the army, a platoon is composed by n soldiers. During the morning inspection, the soldiers are aligned in a straight line in front of the captain. The captain is not satisfied with the way his soldiers are 阅读全文
摘要:
The Cow LexiconTime Limit:2000MSMemory Limit:65536KTotal Submissions:7088Accepted:3299DescriptionFew know that the cows have their own dictionary withW(1 ≤W≤ 600) words, each containing no more 25 of the characters 'a'..'z'. Their cowmunication system, based on mooing, is not very ac 阅读全文