输出“魔方矩阵”。所谓魔方阵是指这样的矩阵，它的每一行、每一列和对角线之和均相等。例如，三界魔方阵为 8 1 6 3 5 7 4 9 2 要求输出1 -n*n的自然数构成的魔方阵。-Cube matrix output . The so-called magic matrix is the matrix, which each row, each column and diagonal and are equal. For example, three cube array