Submission #1108947

#	Time	Username	Problem	Language	Result	Execution time	Memory
1108947		csibe_csavo	Global Warming (CEOI18_glo)	C++14	17 / 100	47 ms	5584 KiB

glo

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

int main() {
	ios_base::sync_with_stdio(0);cin.tie(0);cout.tie(0);
	int n,d; cin>>n>>d;
	vector<int> v(n+2);
	for(int i=1; i<=n; i++)
		cin>>v[i];
	vector<int> lis,dpel(n+1);
	for(int i=1; i<=n; i++)
	{
		int ind=lower_bound(lis.begin(),lis.end(),v[i])-lis.begin();
		if(ind>=lis.size()) lis.push_back(v[i]);
		else lis[ind]=v[i];
		dpel[i]=lis.size();
	}
	vector<int> dphat(n+2),r(n+2);
	lis.clear();
	for(int i=n; i>0; i--)
	{	
		int ujert=v[i]-d;
		ujert=-ujert;
		int ind=lower_bound(lis.begin(),lis.end(),ujert)-lis.begin();
		r[i]=ind+1;
		v[i]=-v[i];
		ind=lower_bound(lis.begin(),lis.end(),v[i])-lis.begin();
		if(ind<lis.size()) lis[ind]=v[i];
		else lis.push_back(v[i]);
	}
	int ans=1;
	for(int i=1; i<=n; i++)
		ans=max(ans,dpel[i]+r[i]-1);
	cout<<ans<<"\n";
	
}

Compilation message (stderr)

glo.cpp: In function 'int main()':
glo.cpp:15:9: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   15 |   if(ind>=lis.size()) lis.push_back(v[i]);
      |      ~~~^~~~~~~~~~~~
glo.cpp:29:9: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   29 |   if(ind<lis.size()) lis[ind]=v[i];
      |      ~~~^~~~~~~~~~~

• Subtask 1: 0 / 5
• Subtask 2: 0 / 10
• Subtask 3: 0 / 13
• Subtask 4: 0 / 10
• Subtask 5: 0 / 20
• Subtask 6: 17 / 17
• Subtask 7: 0 / 25