#include "molecules.h"
#include <vector>
#include <algorithm>
#include <utility>
#include <numeric>
#include <cassert>
#include <cstdio>
using namespace std;
typedef pair<int,int> II;
std::vector<int> find_subset(int l, int u, std::vector<int> w) {
const int N = w.size();
long long sum = 0;
vector<II> V;
for (int i = 0; i < N; ++i) {
V.push_back({w[i], i});
sum += w[i];
}
if (sum < l)
return {};
sort(V.begin(), V.end());
if (V.begin()->first > u)
return {};
vector<long long> psum(N+1);
for (int i = 1; i <= N; ++i)
psum[i] = psum[i-1] + V[i-1].first;
// fprintf(stderr, "l:%d u:%d\n", l, u);
for (int R = 1; R <= N; ++R) {
if (psum[R] < l) continue;
int L = lower_bound(psum.begin(), psum.begin()+R, psum[R]-u) - psum.begin();
// fprintf(stderr, "L:%d R:%d psum[R]:%lld\n", L, R, psum[R]);
if (psum[R] - psum[L] >= l) {
vector<int> res;
for (int i = L+1; i <= R; ++i)
res.push_back(V[i-1].second);
return res;
}
}
// assert(false);
return {};
}
