제출 #536289

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
536289		terrasphere	Detecting Molecules (IOI16_molecules)	C++17	0 / 100	1 ms	468 KiB

molecules

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

std::vector<int> find_subset(int l, int u, std::vector<int> w)
{
    std::vector<std::pair<int,int>> v;
    int n=w.size();
    for(int i=0;i<n;i++)
        v.push_back({w[i],i});
    std::sort(v.begin(),v.end());
    std::vector<int> answer;
    bool arr[222222];
    int left=0,right=0;
    long long sum=0;
    bool possible=true;
    while(left<=right)
    {
        if(sum<l)
        {
            if(right>=n)
            {
                possible=false;
                break;
            }
            sum+=v[right].first;
            arr[v[right].second]=true;
            right++;
        }
        else if(sum>u)
        {
            sum-=v[left].first;
            arr[v[left].second]=false;
            left++;
        }
        else
            break;
    }
    if(!possible)
        return std::vector<int>(0);
    for(int i=1;i<=n;i++)
        if(arr[i])
            answer.push_back(i);
    return answer;
}

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