Submission #404944

#	Time	Username	Problem	Language	Result	Execution time	Memory
404944		ahmeteren	Detecting Molecules (IOI16_molecules)	C++14	100 / 100	66 ms	7072 KiB

molecules

#include <bits/stdc++.h>
#include "molecules.h"
using namespace std;
vector<int> find_subset(int l, int u, vector<int> w)
{
	int n = w.size();
	vector<pair<int, int> > vec(n);
	vector<long long> pre(n+1);
	vector<int> cevap;
	for(int i = 0; i < n; i++)
	{
		vec[i] = {w[i], i};
	}
	sort(vec.begin(), vec.end());
	for(int i = 0; i < n; i++)
		pre[i+1] = pre[i] + vec[i].first;
	for(int i = 1; i <= n; i++)
	{
		int low = 0, high = n - i + 1;
		while(low < high)
		{
			int mid = (low + high) / 2;
			long long sum = pre[mid + i] - pre[mid];
			if(sum < l)
				low = mid + 1;
			else if(sum > u)
				high = mid;
			else
			{
				for(int j = mid; j < mid + i; j++)
					cevap.push_back(vec[j].second);
				break;
			}
		}
		if(!cevap.empty())
			break;
	}
	return cevap;
}

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