摘要: #include<bits/stdc++.h>using namespace std;int n,a,b,sum;void dfs(int x,int y,int ban){ if(__builtin_popcount(ban^sum)==1){ printf("%d %d ",y,x^y); re 阅读全文
posted @ 2019-03-18 22:30 sewage 阅读(147) 评论(0) 推荐(0) 编辑