Submission #677559

#	Time	Username	Problem	Language	Result	Execution time	Memory
677559		hello_there_123	Detecting Molecules (IOI16_molecules)	C++17	100 / 100	63 ms	8728 KiB

molecules

#include <bits/stdc++.h>
using namespace std;
#define ll long long 
vector<int> find_subset(int l,int u,vector<int> w){
  	vector<pair<ll,ll> >lol;
  	for(ll i=0;i<w.size();i++){
		lol.push_back(make_pair(w[i],i));
    }
	sort(lol.begin(),lol.end());
	ll n = w.size();
	ll pre[n+3];
	for(int i=0;i<n;i++){
		if(i==0) pre[i] = lol[i].first;
		else pre[i] = lol[i].first+pre[i-1];
	}
	vector<int>ans;
	vector<ll>cur;
	queue<pair<int,int> >q;
	for(int i=1;i<=n;i++){
		ll lo = i-1;
		ll hi = n-1;
		ll heh = -1;
		while(lo<=hi){
			ll X = (lo+hi)/2;
			ll bruh;
			if(X-i<0) bruh = 0;
			else bruh = pre[X-i];
			if(pre[X]-bruh<=u){
				heh = X;
				lo = X+1;
			}
			else hi = X-1;
		}
		if(heh == -1) continue;
		ll bruh;
		if(heh-i<0) bruh = 0;
		else bruh = pre[heh-i];
		if(pre[heh]-bruh>=l){
			for(ll j=heh;j>=heh-i+1;j--){
				ans.push_back(lol[j].second);
			}
			return ans;
		}
	}
	return ans;
}

Compilation message (stderr)

molecules.cpp: In function 'std::vector<int> find_subset(int, int, std::vector<int>)':
molecules.cpp:6:16: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
    6 |    for(ll 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