Submission #881830

#	Time	Username	Problem	Language	Result	Execution time	Memory
881830		theghostking	Detecting Molecules (IOI16_molecules)	C++17	Compilation error	0 ms	0 KiB

molecules

vector<int> find_subset(int l, int u, vector<int> w) {
    long long n = w.size();
    vector<pair<long long,long long>> vec(n);
    for (long long i = 0; i<n; i++){
        vec[i] = {w[i],i};
    }
    sort(vec.begin(),vec.end());
    vector<bool> vis(n);
    long long pt = n-1;
    long long cr = 0;
    while (pt >= 0){
        if (cr < l){
            cr += vec[pt].first;
            vis[pt] = true;
            pt--;
        }
        if (pt < 0) break;
        if ((l <= cr) && (cr <= u)){
            break;
        }
        if (cr > u){
            cr -= vec[n-1].first;
            cr += vec[0].first;
            vis[n-1] = false;
            vis[0] = true;
            break;
        }
    }
    vector<int> ans;
    if (cr < l || cr > u){
        return ans;
    }
    else{
        for (long long i = 0; i<n; i++){
            if (vis[i]) ans.push_back(i);
        }
        return ans;
    }
}

Compilation message (stderr)

molecules.cpp:1:1: error: 'vector' does not name a type
    1 | vector<int> find_subset(int l, int u, vector<int> w) {
      | ^~~~~~