n阶方阵，即n*n个空格，填入n*n个数， 要求： 所有的行和列上，还有对角线上 的数字和相等（n>=3). 例： 8 1 6 3 5 7 4 9 2 -What other ways can be put forward.. 9 Palace solution to the problem. If there is something wrong with the situation being.thank you very