Submission #62467

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
62467	2018-07-28T17:59:20 Z	zetapi	Parachute rings (IOI12_rings)	C++14	100 / 100	2122 ms	86752 KB

rings

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

#define pb  push_back
#define mp  make_pair
#define ll long long
#define itr ::iterator 

typedef pair<int,int>  pii;

const int MAX=1e6;

vector<int> vec[MAX];

int linear[4],destruct[4],deg[4][MAX],OtherEnd[4][MAX];

int N,cnt,CycleSize,Quad;

void Init(int N_) 
{
  	N=N_;
  	cnt=0;
  	Quad=0;
  	CycleSize=0;
  	for(int A=0;A<N;A++)
  	{
  		deg[0][A]=0;
  		OtherEnd[0][A]=A;
  		vec[A].clear();
  	}
  	return ;
}

void Add(int X,int Y)
{
	int a,b;
	for(int A=0;A<4;A++) 	
	{
		if(!linear[A])
			continue;
		if(destruct[A]==X or destruct[A]==Y)
			continue;
		deg[A][X]++;
		deg[A][Y]++;
		if(deg[A][X]==3 or deg[A][Y]==3 or OtherEnd[A][X]==Y)
		{
			linear[A]=0;
			continue;
		}
		a=OtherEnd[A][X];
		b=OtherEnd[A][Y];
		OtherEnd[A][X]=-1;
		OtherEnd[A][Y]=-1;
		OtherEnd[A][a]=b;
		OtherEnd[A][b]=a;
	}
	return ;
}

void Split(int X)
{
	destruct[0]=X;
	destruct[1]=vec[X][0];
	destruct[2]=vec[X][1];
	destruct[3]=vec[X][2];
	for(int A=0;A<4;A++)
	{
		linear[A]=1;
		for(int B=0;B<N;B++)
		{
			deg[A][B]=0;
			OtherEnd[A][B]=B;
		}
	}
	for(int A=0;A<N;A++)
		for(auto B:vec[A])
			if(A<B)
				Add(A,B);
	return ;	
}

void Link(int A,int B) 
{
	int X=A,Y=B,a,b;
	vec[X].pb(Y);
	vec[Y].pb(X);
	if(Quad==0)
	{
		deg[0][X]++;
		deg[0][Y]++;
		if(deg[0][X]==3)
		{
			Quad=1;
			Split(X);
			return ;
		}
		if(deg[0][Y]==3)
		{
			Quad=1;
			Split(Y);
			return ;
		}
		if(OtherEnd[0][X]!=Y)
		{
			a=OtherEnd[0][X];
			b=OtherEnd[0][Y];
			OtherEnd[0][X]=-1;
			OtherEnd[0][Y]=-1;
			OtherEnd[0][a]=b;
			OtherEnd[0][b]=a;
		}
		else
		{
			cnt++;
			int cur=X,pre=X;
			do
			{
				CycleSize++;
				if(vec[cur][0]==pre)
				{
					pre=cur;
					cur=vec[cur][1];
				}
				else
				{
					pre=cur;
					cur=vec[cur][0];
				}
			}
			while(cur!=X);
		}
	}
	else
		Add(X,Y);
	return ;
}

int CountCritical() 
{	
	if(!Quad)
	{
		if(cnt>1)
			return 0;
		else if(CycleSize)
			return CycleSize;
		else
			return N;
	}
	else
		return (linear[0]+linear[1]+linear[2]+linear[3]);
}

/*signed main()
{
	ios_base::sync_with_stdio(false);

	Init(7);
	cout<<CountCritical()<<"\n";
	Link(1,2);
	cout<<CountCritical()<<"\n";
	Link(0,5);
	cout<<CountCritical()<<"\n";
	Link(2,0);
	cout<<CountCritical()<<"\n";
	Link(3,2);
	cout<<CountCritical()<<"\n";
	Link(3,5);
	cout<<CountCritical()<<"\n";
	Link(4,3);
	cout<<CountCritical()<<"\n";
	return 0;
}*/

Subtask #1
20.0 / 20.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	22 ms	23800 KB	Output is correct
2	Correct	23 ms	24344 KB	Output is correct
3	Correct	24 ms	24344 KB	Output is correct
4	Correct	22 ms	24344 KB	Output is correct
5	Correct	23 ms	24344 KB	Output is correct
6	Correct	25 ms	24344 KB	Output is correct
7	Correct	22 ms	24344 KB	Output is correct
8	Correct	26 ms	24344 KB	Output is correct
9	Correct	26 ms	24360 KB	Output is correct
10	Correct	25 ms	24360 KB	Output is correct

Subtask #2
17.0 / 17.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	478 ms	44328 KB	Output is correct
2	Correct	1217 ms	74368 KB	Output is correct
3	Correct	938 ms	82728 KB	Output is correct
4	Correct	1297 ms	82728 KB	Output is correct
5	Correct	1278 ms	82728 KB	Output is correct
6	Correct	1321 ms	82728 KB	Output is correct
7	Correct	916 ms	82728 KB	Output is correct
8	Correct	1884 ms	82768 KB	Output is correct
9	Correct	2122 ms	86752 KB	Output is correct
10	Correct	1144 ms	86752 KB	Output is correct

Subtask #3
18.0 / 18.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	22 ms	23800 KB	Output is correct
2	Correct	23 ms	24344 KB	Output is correct
3	Correct	24 ms	24344 KB	Output is correct
4	Correct	22 ms	24344 KB	Output is correct
5	Correct	23 ms	24344 KB	Output is correct
6	Correct	25 ms	24344 KB	Output is correct
7	Correct	22 ms	24344 KB	Output is correct
8	Correct	26 ms	24344 KB	Output is correct
9	Correct	26 ms	24360 KB	Output is correct
10	Correct	25 ms	24360 KB	Output is correct
11	Correct	24 ms	86752 KB	Output is correct
12	Correct	27 ms	86752 KB	Output is correct
13	Correct	32 ms	86752 KB	Output is correct
14	Correct	28 ms	86752 KB	Output is correct
15	Correct	26 ms	86752 KB	Output is correct
16	Correct	26 ms	86752 KB	Output is correct
17	Correct	28 ms	86752 KB	Output is correct
18	Correct	29 ms	86752 KB	Output is correct
19	Correct	27 ms	86752 KB	Output is correct
20	Correct	27 ms	86752 KB	Output is correct

Subtask #4
14.0 / 14.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	22 ms	23800 KB	Output is correct
2	Correct	23 ms	24344 KB	Output is correct
3	Correct	24 ms	24344 KB	Output is correct
4	Correct	22 ms	24344 KB	Output is correct
5	Correct	23 ms	24344 KB	Output is correct
6	Correct	25 ms	24344 KB	Output is correct
7	Correct	22 ms	24344 KB	Output is correct
8	Correct	26 ms	24344 KB	Output is correct
9	Correct	26 ms	24360 KB	Output is correct
10	Correct	25 ms	24360 KB	Output is correct
11	Correct	24 ms	86752 KB	Output is correct
12	Correct	27 ms	86752 KB	Output is correct
13	Correct	32 ms	86752 KB	Output is correct
14	Correct	28 ms	86752 KB	Output is correct
15	Correct	26 ms	86752 KB	Output is correct
16	Correct	26 ms	86752 KB	Output is correct
17	Correct	28 ms	86752 KB	Output is correct
18	Correct	29 ms	86752 KB	Output is correct
19	Correct	27 ms	86752 KB	Output is correct
20	Correct	27 ms	86752 KB	Output is correct
21	Correct	43 ms	86752 KB	Output is correct
22	Correct	60 ms	86752 KB	Output is correct
23	Correct	66 ms	86752 KB	Output is correct
24	Correct	66 ms	86752 KB	Output is correct
25	Correct	39 ms	86752 KB	Output is correct
26	Correct	77 ms	86752 KB	Output is correct
27	Correct	113 ms	86752 KB	Output is correct
28	Correct	77 ms	86752 KB	Output is correct
29	Correct	63 ms	86752 KB	Output is correct
30	Correct	83 ms	86752 KB	Output is correct

Subtask #5
31.0 / 31.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	22 ms	23800 KB	Output is correct
2	Correct	23 ms	24344 KB	Output is correct
3	Correct	24 ms	24344 KB	Output is correct
4	Correct	22 ms	24344 KB	Output is correct
5	Correct	23 ms	24344 KB	Output is correct
6	Correct	25 ms	24344 KB	Output is correct
7	Correct	22 ms	24344 KB	Output is correct
8	Correct	26 ms	24344 KB	Output is correct
9	Correct	26 ms	24360 KB	Output is correct
10	Correct	25 ms	24360 KB	Output is correct
11	Correct	478 ms	44328 KB	Output is correct
12	Correct	1217 ms	74368 KB	Output is correct
13	Correct	938 ms	82728 KB	Output is correct
14	Correct	1297 ms	82728 KB	Output is correct
15	Correct	1278 ms	82728 KB	Output is correct
16	Correct	1321 ms	82728 KB	Output is correct
17	Correct	916 ms	82728 KB	Output is correct
18	Correct	1884 ms	82768 KB	Output is correct
19	Correct	2122 ms	86752 KB	Output is correct
20	Correct	1144 ms	86752 KB	Output is correct
21	Correct	24 ms	86752 KB	Output is correct
22	Correct	27 ms	86752 KB	Output is correct
23	Correct	32 ms	86752 KB	Output is correct
24	Correct	28 ms	86752 KB	Output is correct
25	Correct	26 ms	86752 KB	Output is correct
26	Correct	26 ms	86752 KB	Output is correct
27	Correct	28 ms	86752 KB	Output is correct
28	Correct	29 ms	86752 KB	Output is correct
29	Correct	27 ms	86752 KB	Output is correct
30	Correct	27 ms	86752 KB	Output is correct
31	Correct	43 ms	86752 KB	Output is correct
32	Correct	60 ms	86752 KB	Output is correct
33	Correct	66 ms	86752 KB	Output is correct
34	Correct	66 ms	86752 KB	Output is correct
35	Correct	39 ms	86752 KB	Output is correct
36	Correct	77 ms	86752 KB	Output is correct
37	Correct	113 ms	86752 KB	Output is correct
38	Correct	77 ms	86752 KB	Output is correct
39	Correct	63 ms	86752 KB	Output is correct
40	Correct	83 ms	86752 KB	Output is correct
41	Correct	248 ms	86752 KB	Output is correct
42	Correct	844 ms	86752 KB	Output is correct
43	Correct	310 ms	86752 KB	Output is correct
44	Correct	706 ms	86752 KB	Output is correct
45	Correct	871 ms	86752 KB	Output is correct
46	Correct	951 ms	86752 KB	Output is correct
47	Correct	1127 ms	86752 KB	Output is correct
48	Correct	499 ms	86752 KB	Output is correct
49	Correct	770 ms	86752 KB	Output is correct
50	Correct	832 ms	86752 KB	Output is correct
51	Correct	332 ms	86752 KB	Output is correct
52	Correct	610 ms	86752 KB	Output is correct
53	Correct	512 ms	86752 KB	Output is correct
54	Correct	1596 ms	86752 KB	Output is correct
55	Correct	1166 ms	86752 KB	Output is correct

Submission #62467

Compilation message

Subtask #1 20.0 / 20.0

Subtask #2 17.0 / 17.0

Subtask #3 18.0 / 18.0

Subtask #4 14.0 / 14.0

Subtask #5 31.0 / 31.0

Subtask #1
20.0 / 20.0

Subtask #2
17.0 / 17.0

Subtask #3
18.0 / 18.0

Subtask #4
14.0 / 14.0

Subtask #5
31.0 / 31.0