dfs硬怼通过数独 N皇后的代码后 想学习下新的数据结构和算法来解决这类覆盖问题
资料收集如下 进行学习
https://www.cnblogs.com/ivan-count/p/7355431.html
https://www.cnblogs.com/grenet/p/3145800.html
https://blog.csdn.net/whereisherofrom/article/details/79220897
习题学习
洛谷
https://www.luogu.org/problem/P4929 P4929 【模板】舞蹈链（DLX）
https://www.luogu.org/problem/P1074 P1074 靶形数独
https://www.luogu.org/problem/P1219 P1219 八皇后
题解
https://www.luogu.org/blog/ONE-PIECE/qian-tan-dlx 【模板】舞蹈链（DLX）
https://www.luogu.org/blog/ONE-PIECE/ba-xing-shuo-du-dai-ma 靶形数独
https://www.luogu.org/blog/ONE-PIECE/solution-p1219 八皇后
原文：https://www.cnblogs.com/itdef/p/11337878.html