摘要： #include using namespace std; const int maxn = 20; int ans[maxn][maxn]={ {8,0,4,0,9,0,3,2,0}, {0,0,1,0,0,0,8,0,0}, {6,0,0,0,0,8,0,9,7}, {5,0,0,0,3,0,2,0,0}, {7,0,0,0,0,0,0,0,0}, {0,0,9,0,0,5,0,4... 阅读全文