#include "molecules.h" #include<bits/stdc++.h> #define ll long long using namespace std; int main(){ ll n,l,u; cin >> n >> l>>u; pair<ll,ll> w[n]; bool used[n]; ll tot_sum=0; for(int i=0;i<n;i++)cin>>w[i].first; for(int i=0;i<n;i++)w[i].second=i; for(int i=0;i<n;i++)tot_sum+=w[i].first; for(int i=0;i<n;i++)used[i]=false; sort(w,w+n); ll curr_sum=0, pt=0, nani=0; for(int i=0;i<n;i++){ curr_sum+=w[i].first; if(u<curr_sum){ curr_sum-=w[i].first; pt=i; break; } used[i]=true; nani++; if(l<=curr_sum&&curr_sum<=u){ vector<int>v; for(int j=0;j<n;j++){ if(used[j])v.push_back(w[j].second); } return v; } } for(int i=0;i<min(n-pt,pt);i++){ curr_sum-=w[i].first; used[i]=false; curr_sum+=w[n-i-1].first; used[n-i-1]=true; if(l<=curr_sum&&curr_sum<=u){ break; } } if(l<=curr_sum&&curr_sum<=u){ vector<int>v; for(int i=0;i<n;i++){ if(used[i])v.push_back(w[i].second); } return v; } else{ vector<int>v; return v; } }

molecules.cpp: In function 'int main()':
molecules.cpp:31:20: error: cannot convert 'std::vector<int>' to 'int' in return
   31 |             return v;
      |                    ^
molecules.cpp:49:14: error: cannot convert 'std::vector<int>' to 'int' in return
   49 |       return v;
      |              ^
molecules.cpp:53:14: error: cannot convert 'std::vector<int>' to 'int' in return
   53 |       return v;
      |              ^