Submission #82871

#	Time	Username	Problem	Language	Result	Execution time	Memory
82871		SecretAgent007	Detecting Molecules (IOI16_molecules)	C++17	100 / 100	88 ms	13204 KiB

molecules

#include "molecules.h"
#include <bits/stdc++.h>


using namespace std;

vector<int> find_subset(int l, int r, vector<int> w){
    int n = w.size();
    vector< pair<int, int> > toS(0);
    for(int i = 0; i < w.size(); i++){
        toS.push_back(make_pair(w[i],i));
    }
    sort(toS.begin(), toS.end());
    int le = 0;
    int ri = 0;
    long long sum = 0;
    while(1){
        while(ri < n && sum < l){
            sum+=toS[ri++].first;
        }
        while(le < n && sum  > r){
            sum-=toS[le++].first;
        }



        if(sum >= l && sum <= r){
            vector<int> ans(0);
            for(int i = le; i < ri; i++){
                ans.push_back(toS[i].second);
            }
            return ans;
        }
        if(le >= n || ri >= n) break;
    }
    vector<int> ans(0);
    return ans;
}

Compilation message (stderr)

molecules.cpp: In function 'std::vector<int> find_subset(int, int, std::vector<int>)':
molecules.cpp:10:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for(int i = 0; i < w.size(); i++){
                    ~~^~~~~~~~~~

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