Submission #134064

#	Time	Username	Problem	Language	Result	Execution time	Memory
134064		junodeveloper	Detecting Molecules (IOI16_molecules)	C++14	100 / 100	184 ms	18180 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<pair<int,int> > a;
	int i;
	for(i=0;i<w.size();i++) a.push_back({w[i],i});
	sort(a.begin(),a.end());
	set<pair<long long,int> > st;
	long long sum=0;
	st.insert({0,-1});
	for(i=0;i<a.size();i++) {
		sum+=a[i].first;
		auto it=st.lower_bound({sum-u,-1});
		if(it!=st.end()) {
			if(it->first<=sum-l) {
				vector<int> ans;
				for(int j=it->second+1;j<=i;j++) ans.push_back(a[j].second);
				return ans;
			}
		}
		st.insert({sum,i});
	}
	return vector<int>(0);
}

Compilation message (stderr)

molecules.cpp: In function 'std::vector<int> find_subset(int, int, std::vector<int>)':
molecules.cpp:7:11: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for(i=0;i<w.size();i++) a.push_back({w[i],i});
          ~^~~~~~~~~
molecules.cpp:12:11: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for(i=0;i<a.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