Tr A

Time Limit: 1000/1000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 6490    Accepted Submission(s): 4817

Problem Description A为一个方阵，则Tr A表示A的迹（就是主对角线上各项的和），现要求Tr(A^k)