Submission #289486

#	Time	Username	Problem	Language	Result	Execution time	Memory
289486		RuDi24	Detecting Molecules (IOI16_molecules)	C++14	9 / 100	1 ms	384 KiB

molecules

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

std::vector<int> find_subset(int l, int u, std::vector<int> w) {
	vector <int> ans;
	vector <pair<int,int> >wi(w.size());
	for(int i = 0;i < w.size();i++){
		wi[i].first = w[i];
		wi[i].second = i;
	}
	ans.reserve(w.size());
	sort(wi.begin(),wi.end());
	long long sum = 0;
	int it;
	for(it = 0;it < w.size() && sum + w[it] <= u;it++){
		sum += wi[it].first;
		ans.emplace_back(wi[it].second);
	}
	if(sum >= l && sum <= u) return ans;
	for(int i = 0;i < wi.size()-it;i++){
		if(sum + (wi[it+i].first-wi[i].first) <= u){
		sum+= wi[it+i].first-wi[i].first;
		ans[i] = wi[it+i].second;
		}
		if(sum >= l && sum <= u) return ans;
	}
	return vector <int> (0);
}
// int main(){
// 	auto a = find_subset(15, 17, {6, 8, 8, 7});
// 	for(int i = 0;i < a.size();i++){
// 		cout<<a[i]<<' ';
// 	}
// 	cout<<endl;
// 	a = find_subset(14, 15, {5, 5, 6, 6});
// 	for(int i = 0;i < a.size();i++){
// 		cout<<a[i]<<' ';
// 	}
// 	cout<<endl;
// 	a = find_subset(10, 20, {15, 17, 16, 18});
// 	for(int i = 0;i < a.size();i++){
// 		cout<<a[i]<<' ';
// 	}
// 	cout<<endl;
// 	a = find_subset(22, 24, {12, 12, 12, 12});
// 	for(int i = 0;i < a.size();i++){
// 		cout<<a[i]<<' ';
// 	}
// 	cout<<endl;

// }

Compilation message (stderr)

molecules.cpp: In function 'std::vector<int> find_subset(int, int, std::vector<int>)':
molecules.cpp:8:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
    8 |  for(int i = 0;i < w.size();i++){
      |                ~~^~~~~~~~~~
molecules.cpp:16:16: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   16 |  for(it = 0;it < w.size() && sum + w[it] <= u;it++){
      |             ~~~^~~~~~~~~~
molecules.cpp:21:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   21 |  for(int i = 0;i < wi.size()-it;i++){
      |                ~~^~~~~~~~~~~~~~

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