Submission #1024938

#	Time	Username	Problem	Language	Result	Execution time	Memory
1024938		alex_2008	Detecting Molecules (IOI16_molecules)	C++14	100 / 100	45 ms	8652 KiB

molecules

#include "molecules.h"
#include <iostream>
#include <cmath>
#include <vector>
#include <algorithm>
#include <set>
#include <map>
typedef long long ll;
using namespace std;
const int N = 2e5 + 10;
const int INF = 1e9 + 10;
vector <int> find_subset(int l, int u, vector <int> w) {
	int n = (int)w.size();
	vector <pair<int, int>> esim;
	vector <ll> pref;
	for (int i = 0; i < n; i++) {
		esim.push_back({ w[i], i });
	}
	sort(esim.begin(), esim.end());
	ll s = 0;
	for (auto &it : esim) {
		s += it.first;
		pref.push_back(s);
	}
	for (int i = 0; i < n; i++) {
		ll w = 0;
		if (i) w = pref[i - 1];
		int ind = lower_bound(pref.begin(), pref.end(), w + l) - pref.begin();
		if (ind == n) continue;
		if ((pref[ind] - w) <= u) {
			vector <int> v;
			for (int j = i; j <= ind; j++) {
				v.push_back(esim[j].second);
			}
			return v;
		}
	}
	return {};
}

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