Submission #1208501

#	Time	Username	Problem	Language	Result	Execution time	Memory
1208501		omsincoconut	Detecting Molecules (IOI16_molecules)	C++17	0 / 100	1 ms	328 KiB

molecules

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

using namespace std;
typedef long long ll;

vector<int> find_subset(int l, int u, vector<int> w) {
    int n = w.size();
    vector<pair<ll, int>> wi(n);

    ll sum_all = 0;
    for (int i = 0; i < n; i++) {
        wi[i] = make_pair((ll)w[i], i);
        sum_all += w[i];
    }

    sort(wi.begin(), wi.end());
    if (u < wi[0].first || u > sum_all) return vector<int>();

    ll cur_sum = 0;
    int idx1 = n-1;
    while (cur_sum < l) {
        cur_sum += wi[idx1].first;
        idx1--;
    }

    int idx2 = 0;
    while (cur_sum > u) {
        cur_sum += wi[idx2].first - wi[n-idx2-1].first;
        idx2++;
    }

    vector<int> ans;
    for (int i = 0; i < idx2; i++) ans.push_back(wi[i].second);
    for (int i = idx1+1; i < n-idx2; i++) ans.push_back(wi[i].second);

    if (idx1+1 <= idx2-1) return vector<int>();
    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: 0 / 9
• Subtask 2: 0 / 10
• Subtask 3: 0 / 12
• Subtask 4: 0 / 15
• Subtask 5: 0 / 23
• Subtask 6: 0 / 31