一个注意力检测程序，在9*9方格内，将81个数随机排列，依次输出1至81位于哪一行哪一列。输出时间，考验注意力-A attention detection program, in the 9*9 grid, the 81 number of random permutations, which in turn 1 to 81, which is located in which row. Output time, test attention