Submission #961264

#	Time	Username	Problem	Language	Result	Execution time	Memory
961264		aminjon__	Detecting Molecules (IOI16_molecules)	C++17	69 / 100	34 ms	5836 KiB

molecules

#include<bits/stdc++.h>
using namespace std;
pair<int,int>w2[200012];

vector<int> find_subset(int l , int r , vector<int> w){
	vector <int>result;
	int n = w.size(),sum = 0 , left = 0 , right = 0;
	for(int i = 0;i < n;i++){
		w2[i].first = w[i];
		w2[i].second = i;
	}
	sort(w2 , w2+n , greater<pair<int,int>>());
	while(sum < l && right < n){
		sum += w2[right].first;
		result.push_back(w2[right].second);
		right++;
	}
	if(sum >= l && sum <= r){
		return result;
	}
	else if(sum < l || right == n){
		result.clear();
		return result;
	}
	int last = n-1;
	while(last >= right && sum > r && left < right){
		sum -= w2[left].first-w2[last].first;
		result[left] = w2[last].second;
		last--;
		left++;
	}
	
	if(sum >= l && sum <= r){
		return result;
	}
	while(sum > r && result.size()>0){
		sum -= w[result.back()];
		result.pop_back();
	}
	result.clear();
	return result;
}

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