@目录A.ConstructiveProblems(800)B.Begginer'sZelda(1100)C.LargestSubsequence(1400)D.CyclicMEX(2000)E.One-X(2400)F.FieldShouldNotBeEmpty(2600)提交记录A.ConstructiveProblems(800)注意到，对于\(n\timesn\)的矩阵，只需要把对角线全染黑即可。推广到\(