Submission #774597

#	Time	Username	Problem	Language	Result	Execution time	Memory
774597		JMs	Detecting Molecules (IOI16_molecules)	C++17	100 / 100	39 ms	4936 KiB

molecules

    #include <bits/stdc++.h>

    using namespace std;

    vector<int> find_subset(int l, int u, vector<int> w)
    {
        unsigned  const long long tam = 200005;
        long long aux, ph, pl, s;
        vector <int> result;
        vector<pair<int, int> > v;
        for( long long i=0; i<w.size(); i++){
            v.push_back(make_pair(w[i], i));
        }
        sort(v.begin(), v.end());
        pl=0;
        ph=0;
        s=v[0].first;
        while(1){
            //cout<<pl<<" "<<ph<<" "<<s<<endl;
            if(s<l && ph<w.size()-1){
                ph++;
                s+=v[ph].first;
            }
            else if(s>u && pl<ph){
                s-=v[pl].first;
                pl++;
            }
            else if( s>u || s<l ){
                return vector<int>();
                break;
            }
            else{
                for( long long i=pl; i<=ph; i++){
                    //cout<<v[i].second<<" ";
                    result.push_back(v[i].second);
                }
                //cout<<endl;
                break;
            }
        }
        return result;
    }

Compilation message (stderr)

molecules.cpp: In function 'std::vector<int> find_subset(int, int, std::vector<int>)':
molecules.cpp:11:30: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   11 |         for( long long i=0; i<w.size(); i++){
      |                             ~^~~~~~~~~
molecules.cpp:20:25: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   20 |             if(s<l && ph<w.size()-1){
      |                       ~~^~~~~~~~~~~
molecules.cpp:7:35: warning: unused variable 'tam' [-Wunused-variable]
    7 |         unsigned  const long long tam = 200005;
      |                                   ^~~
molecules.cpp:8:19: warning: unused variable 'aux' [-Wunused-variable]
    8 |         long long aux, ph, pl, s;
      |                   ^~~

• Subtask 1: 9 / 9
• Subtask 2: 10 / 10
• Subtask 3: 12 / 12
• Subtask 4: 15 / 15
• Subtask 5: 23 / 23
• Subtask 6: 31 / 31