Submission #1102202

#	Time	Username	Problem	Language	Result	Execution time	Memory
1102202		akzytr	Detecting Molecules (IOI16_molecules)	C++17	100 / 100	132 ms	27468 KiB

molecules

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

vector<int> find_subset(int l, int u, vector<int> w) {
	ll p = 0;
	vector<int> result;
    int n = w.size();
	pair<int, int> w2[n];
	for(int i = 0; i < n; i++) {
		w2[i].first = w[i];
		w2[i].second = i;
	}
	sort(w2, w2 + n);

	set<ll> pss;
	map<ll, int> psjn;

	psjn[0] = -1;
	pss.insert(0);
	for(int i = 0; i < w.size(); i++) {
		p += w2[i].first;
		auto lb = pss.lower_bound(p - u);
		if(lb == pss.end()) {
			lb--;
		}

		if(lb != pss.end() && p - *lb >= l && p - *lb <= u) {
			for(int j = psjn[*lb] + 1; j <= i; j++) {
				result.push_back(w2[j].second);
			}
			break;
		}

		pss.insert(p);
		psjn[p] = i;
	}

	return result;
}

Compilation message (stderr)

molecules.cpp: In function 'std::vector<int> find_subset(int, int, std::vector<int>)':
molecules.cpp:22:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   22 |  for(int i = 0; i < w.size(); i++) {
      |                 ~~^~~~~~~~~~

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