Submission #359776

#	Time	Username	Problem	Language	Result	Execution time	Memory
359776		ogibogi2004	DEL13 (info1cup18_del13)	C++14	100 / 100	35 ms	10156 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 d=v[i]-v[i-1]-1;
		for(int j1=0;j1<=2;j1++)
		{
			if(dp[i-1][j1]==0)continue;
			for(int j2=0;j2<=2;j2++)
			{
				if(j1+j2<=d&&(j1+j2)%2==d%2&&!(j1+j2==0&&d!=0))
				{
					int l=v[i-1]+1;
					int r=v[i]-1;
					int mid=(l+r)/2;
					int cnt=(d-j1-j2)/2;
					vector<int>moves;
					for(int l=0;l<j1;l++)moves.push_back(v[i-1]);
					for(int k=0;k<cnt;k++)moves.push_back(mid);
					dp[i][j2]=1;
					prev[i][j2]={i-1,j1};
					last[i][j2]=moves;
				}
			}
		}
	}
	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: 15 / 15
• Subtask 2: 15 / 15
• Subtask 3: 15 / 15
• Subtask 4: 25 / 25
• Subtask 5: 30 / 30