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Hawk-and-ChickenTime Limit: 6000/2000 MS (Java/Others)Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 1259Accepted Submission(s): 360Problem DescriptionKids in kindergarten enjoy playing a game called Hawk-and-Chicken. But there always exists a big problem: every kid in this game want 阅读全文
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The King’s ProblemTime Limit: 2000/1000 MS (Java/Others)Memory Limit: 65536/32768 K (Java/Others)Total Submission(s): 1142Accepted Submission(s): 424Problem DescriptionIn the Kingdom of Silence, the king has a new problem. There are N cities in the kingdom and there are M directional roads between t 阅读全文
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Summer HolidayTime Limit: 10000/1000 MS (Java/Others)Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 1147Accepted Submission(s): 503Problem DescriptionTo see a World in a Grain of SandAnd a Heaven in a Wild Flower,Hold Infinity in the palm of your handAnd Eternity in an hour.—— William 阅读全文
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Proving EquivalencesTime Limit: 4000/2000 MS (Java/Others)Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 1842Accepted Submission(s): 698Problem DescriptionConsider the following exercise, found in a generic linear algebra textbook.Let A be an n × n matrix. Prove that the followin 阅读全文