Submission #1362581

#	Time	Username	Problem	Language	Result	Execution time	Memory
1362581		mayac	Detecting Molecules (IOI16_molecules)	C++20	46 / 100	1 ms	580 KiB

molecules

#include <bits/stdc++.h>
using namespace std;

std::vector<int> find_subset(int l, int u, std::vector<int> w2) {
    int n=w2.size(),s=0;
    vector<pair<int,int>> w(n);
    for(int i=0;i<n;i++)w[i]={w2[i],i};
    sort(w.begin(),w.end());
    for(int i=0;i<n;i++){
        if(w[i].first>=l&&w[i].first<=u)return {w[i].second};
        s+=w[i].first;
    }
    if(s<l||w[0].first>u)return std::vector<int>(0);
    vector<int> ans;
    int c=0;
    s=0;
    for(c;c<n&&s<u;c++){
        s+=w[n-1-c].first;
        ans.push_back(w[n-1-c].second);
        if(s>=l&&s<=u)return ans;
    }
    for(int i=0;i<min(n-c,c);i++){
        ans[i]=w[i].second;
        s=s-w[n-1-i].first+w[i].first;
        if(s>=l&&s<=u)return ans;
    }
    return std::vector<int>(0);
}

• Subtask 1: 9 / 9
• Subtask 2: 10 / 10
• Subtask 3: 12 / 12
• Subtask 4: 15 / 15
• Subtask 5: 0 / 23
• Subtask 6: 0 / 31