#include "molecules.h"
#include <bits/stdc++.h>
using namespace std;
vector<int> find_subset(int l, int u, std::vector<int> w) {
vector<int> ans;
int ss=w.size();
int same=w[0], cnt1=0, cnt2=0, secel;
unordered_set<int> posfir, possec;
bool oksame=true;
for (int i=1; i<ss; i++){
if (w[i]!=same) {oksame=false; cnt2++; secel=w[i]; possec.insert(i);}
else {cnt1++; posfir.insert(i);}
}
if (!oksame){
if (secel>=l and secel<=u) ans.push_back(*possec.begin());
else if (same>=l and same<=u) ans.push_back(*posfir.begin());
else{
bool done=false;
for (int i=1; i<=cnt1; i++){
for (int j=1; j<=cnt2; j++){
if (secel*j + same*i>=l and secel*j + same*i<=u){
auto fi=posfir.begin(), se=possec.begin();
for (int k=0; k<i; k++, fi++) ans.push_back(*fi);
for (int k=0; k<j; k++, se++) ans.push_back(*se);
done=true;
break;
}
}
if (done) break;
}
}
}else{
for (int i=1; i<=ss; i++){
if (same*i>=l and same*i<=u){
for (int j=0; j<i; j++) ans.push_back(j);
break;
}
}
}
return ans;
}
