Submission #359760

#	Time	Username	Problem	Language	Result	Execution time	Memory
359760		ogibogi2004	DEL13 (info1cup18_del13)	C++14	40 / 100	35 ms	10160 KiB

del13

#include<bits/stdc++.h>
using namespace std;
#define prev sdsdfsdsf
const int MAXN=1e5+6;
bool dp[MAXN][3];
vector<int>last[MAXN][3];
pair<int,int>prev[MAXN][3];
void solve()
{
	int n,q;
	cin>>n>>q;
	vector<int>v;
	v.push_back(0);
	for(int i=0;i<q;i++)
	{
		int p;
		cin>>p;
		v.push_back(p);
	}
	v.push_back(n+1);
	for(int i=0;i<=v.size();i++)
	{
		for(int j=0;j<3;j++)
		{
			dp[i][j]=0;
			last[i][j].clear();
		}
	}
	dp[0][0]=1;
	for(int i=1;i<v.size();i++)
	{
		int t=v[i]-v[i-1]-1;
		vector<int>moves;
		int mid=(v[i]+v[i-1])/2;
		while(t>2)
		{
			moves.push_back(mid);
			t-=2;
		}
		for(int j=0;j<=t;j++)
		{
			if(dp[i-1][j])
			{
				vector<int>l=moves;
				for(int k=0;k<j;k++)
				{
					l.push_back(v[i-1]);
				}
				dp[i][t-j]=1;
				last[i][t-j]=l;
				prev[i][t-j]={i-1,j};
			}
		}
		if(moves.size()>0)
		{
			moves.pop_back();
			t+=2;
			for(int j=t-2;j<=2;j++)
			{
				if(dp[i-1][j])
				{
					vector<int>l=moves;
					for(int k=0;k<j;k++)
					{
						l.push_back(v[i-1]);
					}
					dp[i][t-j]=1;
					last[i][t-j]=l;
					prev[i][t-j]={i-1,j};
				}
			}
		}
	}
	if(dp[v.size()-1][0])
	{
		//cout<<"0\n";
		vector<int>out;
		int x=v.size()-1,y=0;
		while(!(x==0&&y==0))
		{
			for(auto xd:last[x][y])out.push_back(xd);
			tie(x,y)=prev[x][y];
		}
		reverse(out.begin(),out.end());
		cout<<out.size()<<endl;
		for(auto xd:out)cout<<xd<<" ";
		cout<<endl;
	}
	else
	{
		cout<<"-1\n";
	}
}	
int main()
{
	int t;
	cin>>t;
	while(t--)solve();
return 0;
}

Compilation message (stderr)

del13.cpp: In function 'void solve()':
del13.cpp:21:15: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   21 |  for(int i=0;i<=v.size();i++)
      |              ~^~~~~~~~~~
del13.cpp:30:15: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   30 |  for(int i=1;i<v.size();i++)
      |              ~^~~~~~~~~

• Subtask 1: 6 / 15
• Subtask 2: 6 / 15
• Subtask 3: 6 / 15
• Subtask 4: 10 / 25
• Subtask 5: 12 / 30