2018 Multi-University Training Contest 4 Problem J. Let Sudoku Rotate 【DFS+剪枝+矩陣旋轉】

任意門:http://acm.hdu.edu.cn/showproblem.php?pid=6341 Problem J. Let Sudoku Rotate Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 262144/262144 K (Java/Others) Total Submission(s): 1363    Accep
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