Submission #299135

#	Time	Username	Problem	Language	Result	Execution time	Memory
299135		azatega	Detecting Molecules (IOI16_molecules)	C++11	9 / 100	1 ms	256 KiB

molecules

#include "molecules.h"
#include <vector>
#include <algorithm>

using namespace std;

#define ll long long

vector<int> find_subset(int l, int u, vector<int> w) {
	vector<pair<ll, int>> new_w;
    vector<int> bl;

	ll tot_sum = 0;
	for(int i = 0; i < w.size(); i++){
		tot_sum += w[i];
		new_w.push_back({w[i], i});
	}

	sort(new_w.begin(), new_w.end());

	if(tot_sum < l || new_w[0].first > u)
		return bl;

    ll currsum = 0;
    int tot_sum_idx = 0;

    for(int i = 0; i < new_w.size(); i++){
    	currsum += new_w[i].first;
    	while(tot_sum_idx <= i || (tot_sum_idx < new_w.size() && tot_sum+currsum > u)){
    		tot_sum -= new_w[tot_sum_idx].first;
    		tot_sum_idx++;
    	}

    	if(tot_sum + currsum >= l && tot_sum + currsum <= u){
    		vector<int> res;
			for(int x = 0; x <= i; x++)
				res.push_back(new_w[x].second);
			for(int x = tot_sum_idx; x < new_w.size(); x++)
				res.push_back(new_w[x].second);
			
			return res;
    	}
    }

    return bl;
}

/*int main(){
	int n, l, u;
	vector<int> niz;
	cin >> n >> l >> u;
	
	niz.resize(n);
	for(int i = 0; i < n; i++)
		cin >> niz[i];
	vector<int> rs = find_subset(l, u, niz);
	for(int i = 0; i < rs.size(); i++)
		cout << rs[i] << endl;
}*/

Compilation message (stderr)

molecules.cpp: In function 'std::vector<int> find_subset(int, int, std::vector<int>)':
molecules.cpp:14:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   14 |  for(int i = 0; i < w.size(); i++){
      |                 ~~^~~~~~~~~~
molecules.cpp:27:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<long long int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   27 |     for(int i = 0; i < new_w.size(); i++){
      |                    ~~^~~~~~~~~~~~~~
molecules.cpp:29:45: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<long long int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   29 |      while(tot_sum_idx <= i || (tot_sum_idx < new_w.size() && tot_sum+currsum > u)){
      |                                 ~~~~~~~~~~~~^~~~~~~~~~~~~~
molecules.cpp:38:31: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<long long int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   38 |    for(int x = tot_sum_idx; x < new_w.size(); x++)
      |                             ~~^~~~~~~~~~~~~~

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