Submission #1323211

#	Time	Username	Problem	Language	Result	Execution time	Memory
1323211		phoenix0423	Detecting Molecules (IOI16_molecules)	C++20	100 / 100	32 ms	2752 KiB

molecules

#include "molecules.h"

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

typedef long long ll;
#define pb push_back

std::vector<int> find_subset(int l, int u, std::vector<int> w) {
    int n = w.size();
    if(accumulate(w.begin(), w.end(), 0LL) < l) return {};
    vector<int> ans;
    vector<int> id(n);
    iota(id.begin(), id.end(), 0);
    sort(id.begin(), id.end(), [&](int a, int b){ return w[a] < w[b]; });
    ll cur = 0;
    for(int i = n - 1; i >= 0 && cur < l; i--){
        ans.pb(id[i]);
        cur += w[id[i]];
    }
    int p = 0, lim = ans.back();
    for(int i = 0; i < ans.size(); i++){
        if(cur <= u) break;
        if(id[p] == lim) break;
        cur += w[id[p]] - w[ans[i]];
        ans[i] = id[p++];
    }
    if(cur > u) return {};
    sort(ans.begin(), ans.end());
    return ans;
}

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