Submission #879627

#	Time	Username	Problem	Language	Result	Execution time	Memory
879627		charleehp	Detecting Molecules (IOI16_molecules)	C++14	100 / 100	43 ms	5680 KiB

molecules

#include "molecules.h"
#include <algorithm>

using namespace std;

void fillRange(int a, int b, vector< pair<int, int> > &W, vector<int> &ans) {
    for (; a < b; a++) {
        ans.push_back(W[a].second);
    }
}

std::vector<int> find_subset(int l, int u, std::vector<int> w) {
    int n = w.size();
    vector< pair<int, int> > W(n);

    for (int i = 0; i < n; i++) {
        W[i] = make_pair(w[i], i);
    }
    sort(W.begin(), W.end());

    vector<int> ans(0);
    long long sum = W[0].first;
    int j = 1;
    for (int i = 0; i < n; i++) {
        while (sum < l && j < n) {
            sum += (long long)W[j].first;
            j++;
        }

        if (l <= sum && sum <= u) {
            fillRange(i, j, W, ans);
            return ans;
        }

        sum -=  (long long)W[i].first;
    }

    return std::vector<int>(0);
}

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