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Popular CowsTime Limit: 2000MS Memory Limit: 65536KTotal Submissions: 42216 Accepted: 17135DescriptionEvery cow’s dream is to become the most popular cow in the herd. In a herd of N (1 <= N &...

Summer HolidayTime Limit: 10000/1000 MS (Java/Others) Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 4954 Accepted Submission(s): 2207Problem DescriptionTo see a World in a Gr...

Proving EquivalencesProblem DescriptionConsider the following exercise, found in a generic linear algebra textbook.Let A be an n × n matrix. Prove that the following statements are equivalent:A i...

Equivalent SetsProblem DescriptionTo prove two sets A and B are equivalent, we can first prove A is a subset of B, and then prove B is a subset of A, so finally we got that these two sets are equiva...

PathTime Limit: 2000/1000 MS (Java/Others) Memory Limit: 262144/262144 K (Java/Others)Total Submission(s): 1831 Accepted Submission(s): 496Problem DescriptionYears later, Jerry fell in love ...