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第一个深搜回溯(是叫这个名吧- -}}}),纪念下主要注意要字典序列,其实也很好办,注意一下扩展的顺序就行了。
国际象棋棋盘是从左向右A->B->...类推
从上到下1->2->...类推
所以扩展的时候,如果要按字典序列就应该
int dir[2][8]={-1,1,-2,2,-2,2,-1,1,
-2,-2,-1,-1,1,1,2,2};
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