Submission #388574

#	Time	Username	Problem	Language	Result	Execution time	Memory
388574		aarr	Detecting Molecules (IOI16_molecules)	C++14	100 / 100	79 ms	5192 KiB

molecules

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

const int N = 200 * 1000 + 5;

pair <int, int> a[N];
long long ps[N];

std::vector<int> find_subset(int l, int r, std::vector<int> w) {
	vector <int> ans;
    int n = w.size();
    for (int i = 1; i <= n; i++) {
    	a[i] = {w[i - 1], i - 1};
	}
	sort(a + 1, a + n + 1);
	for (int i = 1; i <= n; i++) {
		ps[i] = ps[i - 1] + a[i].first;
	}
//	for (int i = 1; i <= n; i++) {
//		cout << "71 " << a[i].first << " " << a[i].second << endl;
//	}
	for (int i = 0; i < n; i++) {
		int x = lower_bound(ps + i, ps + n + 1, ps[i] + l) - ps;
		if (x <= n && ps[x] - ps[i] <= r) {
			for (int j = i + 1; j <= x; j++) {
				ans.push_back(a[j].second);
			}
			return ans;
		}
	}
	return ans;
}

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