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Language: Solution to the
n^{2} − 1 Puzzle
Description In addition to the eight queen puzzle, another famous puzzle that has also been generalized is the fifteen puzzle. For a puzzle of size Input The input contains exactly one test case. The first line of input contains Output If no solution exists, just print “ Sample Input 2 3 1 2 0 Sample Output LURD Source POJ Monthly--2007.06.03, Huang, Jinsong |

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