穿过雾的阴霾

摘要： ``` class Solution { public: vector row,anti_diag,col,diag; int res=0; void dfs(int n,int x,int y,int cnt) { if(y==n) y=0,x++; if(x==n) { if(cnt==n) r 阅读全文

摘要： ``` class Solution { public: vector> res; vector path; vector anti_diag,col,diag; void dfs(int n,int u) { if(u==n) { res.push_back(path); return; } st 阅读全文