Submission #821343

#	Time	Username	Problem	Language	Result	Execution time	Memory
821343		Kerim	Detecting Molecules (IOI16_molecules)	C++17	69 / 100	1071 ms	2796 KiB

molecules

#include "molecules.h"
#include "bits/stdc++.h"
#define ll long long
using namespace std;

vector<int> find_subset(int l, int u, vector<int> w) {
    int n = w.size();
    vector<int> ind(n);
    for (int i = 0; i < n; i++)
        ind[i] = i;
    sort(ind.begin(), ind.end(), [&](int x, int y){
        return (w[x] < w[y]);
    });
    vector<int> answer;
    ll pref_sum = 0;
    for (int i = 0; i < n; i++){
        ll sum = pref_sum;
        if (sum > u)
            break;
        if (sum >= l){
            for (int h = 0; h < i; h++)
                answer.push_back(ind[h]);
            return answer;
        }
        for (int j = n-1; j >= i; j--){
            sum += w[ind[j]];
            if (sum > u)
                break;
            if (sum >= l){
                for (int h = 0; h < i; h++)
                    answer.push_back(ind[h]);
                for (int h = j; h < n; h++)
                    answer.push_back(ind[h]);
                return answer;
            }
        }
        pref_sum += w[ind[i]];
    }
    return vector<int>{};
}

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