ACwing 92. 遞歸實現指數型枚舉(二進制與非二進制)

#include<iostream> #include<vector> using namespace std; int n; /*void dfs(int u,int state) { if(u==n) { for(int i=0;i<n;i++) if( state>>i & 1) cout<<i+1<<" ";

>>阅读原文<<