#include <bits/stdc++.h>
#define f first
#define s second
#define pb push_back
#define mp make_pair
#define ll long long
using namespace std;
//#include "molecules.h"
vector<int> find_subset(int L, int R, vector<int> w) {
vector <pair <long long,long long> > v;
vector <int> ans;
ans.clear();
v.clear();
for (int i=0; i<w.size(); i++) v.pb(mp(w[i],i));
sort(v.begin(),v.end());
if (v[0].f>R) return {};
int l=0; int r=v.size();
long long sum=0;
for (int i=0; i<v.size(); i++){
sum+=v[i].f;
if (sum>=L){
r=i; break;
}
}
if (sum<L) return {};
if (sum<=R){
for (int i=0; i<=r; i++) ans.pb(v[i].s);
return ans;
}
sum-=v[r].f;
r--;
int st=r;
for (int i=st; i<v.size(); i++){
if (sum>=L && sum<=R) break;
sum-=v[l].f; l++; r++; sum+=v[r].f;
}
//cout<<sum<<endl;
if (sum<L || sum>R) return ans;
for (int i=l; i<=r; i++){
ans.pb(v[i].s);
}
return ans;
}
/*
int main() {
int n, l, u;
assert(3 == scanf("%d %d %d", &n, &l, &u));
std::vector<int> w(n);
for (int i = 0; i < n; i++)
assert(1 == scanf("%d", &w[i]));
std::vector<int> result = find_subset(l, u, w);
printf("%d\n", (int)result.size());
for (int i = 0; i < (int)result.size(); i++)
printf("%d%c", result[i], " \n"[i == (int)result.size() - 1]);
}*/
