hdu2157How many ways?? 矩陣快速冪

How many ways?? Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others) Total Submission(s): 5294    Accepted Submission(s): 2096 Problem Description 春天到了, HDU校園裏開滿了花, 奼紫嫣紅
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