#include "molecules.h" #include <bits/stdc++.h> using namespace std; vector<int> vec,ans; bool used[200005]; unordered_map<long long,bool> mymap; int n,L,R; bool solve(long long sum,int idx){ if(sum>R) return 0; if(sum>=L&&sum<=R){ for (int i = 0; i < n; ++i) { if(used[i]) ans.push_back(i); } return 1; } if(mymap.find(sum)!=mymap.end()) return 0; for (int i = idx+1; i < n; ++i) { used[i]=1; if(solve(sum+vec[i],i))return 1; mymap[sum]=1; used[i]=0; } return 0; } std::vector<int> find_subset(int l, int u, std::vector<int> w) { n=w.size(); L=l;R=u; vec=w; if(!solve(0,-1)) return vector<int>(0); return ans; }