Submission #1317924

#	Time	Username	Problem	Language	Result	Execution time	Memory
1317924		_unknown_2010	Detecting Molecules (IOI16_molecules)	C++20	9 / 100	1 ms	332 KiB

molecules

#include "molecules.h"
#include <bits/stdc++.h>
using namespace std;
#define vi vector
// #define int long long
#define all(x) (x).begin(), (x).end()
mt19937 rng(363636);
vector<int> find_subset(int l, int u, vector<int> w) {
    vi<pair<int,int>> v;
    for(int i=0; i<w.size(); i++){
        v.push_back({w[i], i});
    }
    sort(all(v));
    int n=w.size(), thre=40;
    for(int _=0; _<100; _++){
        for(int i=0; i<n; i+=thre){
            int r=min(n-1, i+thre-1);
            shuffle(v.begin()+i, v.begin()+r+1, rng);
        }
        int sum=0;
        vi<int> ans;
        for(int i=0; i<n; i++){
            sum+=v[i].first;
            ans.push_back(v[i].second);
            if(sum>=l && sum<=u){
                return ans;
            }
        }
    }
    return vi<int>{};
}

Compilation message (stderr)

molecules.h:1:9: warning: #pragma once in main file
    1 | #pragma once
      |         ^~~~
molecules_c.h:1:9: warning: #pragma once in main file
    1 | #pragma once
      |         ^~~~

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