Submission #62475

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
62475	2018-07-28T18:07:27 Z	zetapi	Parachute rings (IOI12_rings)	C++14	100 / 100	2145 ms	110388 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=2e6;

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++;
		if(cnt==1 and OtherEnd[0][X]==Y)
		{
			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	42 ms	47224 KB	Output is correct
2	Correct	46 ms	47732 KB	Output is correct
3	Correct	44 ms	47804 KB	Output is correct
4	Correct	43 ms	47804 KB	Output is correct
5	Correct	42 ms	47804 KB	Output is correct
6	Correct	45 ms	47804 KB	Output is correct
7	Correct	46 ms	47804 KB	Output is correct
8	Correct	45 ms	47804 KB	Output is correct
9	Correct	45 ms	47964 KB	Output is correct
10	Correct	46 ms	48092 KB	Output is correct

Subtask #2
17.0 / 17.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	488 ms	67976 KB	Output is correct
2	Correct	1264 ms	97876 KB	Output is correct
3	Correct	940 ms	106428 KB	Output is correct
4	Correct	1313 ms	106428 KB	Output is correct
5	Correct	1311 ms	106428 KB	Output is correct
6	Correct	1390 ms	106428 KB	Output is correct
7	Correct	920 ms	106428 KB	Output is correct
8	Correct	1906 ms	106428 KB	Output is correct
9	Correct	2145 ms	110388 KB	Output is correct
10	Correct	841 ms	110388 KB	Output is correct

Subtask #3
18.0 / 18.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	42 ms	47224 KB	Output is correct
2	Correct	46 ms	47732 KB	Output is correct
3	Correct	44 ms	47804 KB	Output is correct
4	Correct	43 ms	47804 KB	Output is correct
5	Correct	42 ms	47804 KB	Output is correct
6	Correct	45 ms	47804 KB	Output is correct
7	Correct	46 ms	47804 KB	Output is correct
8	Correct	45 ms	47804 KB	Output is correct
9	Correct	45 ms	47964 KB	Output is correct
10	Correct	46 ms	48092 KB	Output is correct
11	Correct	44 ms	110388 KB	Output is correct
12	Correct	47 ms	110388 KB	Output is correct
13	Correct	48 ms	110388 KB	Output is correct
14	Correct	45 ms	110388 KB	Output is correct
15	Correct	47 ms	110388 KB	Output is correct
16	Correct	48 ms	110388 KB	Output is correct
17	Correct	62 ms	110388 KB	Output is correct
18	Correct	49 ms	110388 KB	Output is correct
19	Correct	47 ms	110388 KB	Output is correct
20	Correct	48 ms	110388 KB	Output is correct

Subtask #4
14.0 / 14.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	42 ms	47224 KB	Output is correct
2	Correct	46 ms	47732 KB	Output is correct
3	Correct	44 ms	47804 KB	Output is correct
4	Correct	43 ms	47804 KB	Output is correct
5	Correct	42 ms	47804 KB	Output is correct
6	Correct	45 ms	47804 KB	Output is correct
7	Correct	46 ms	47804 KB	Output is correct
8	Correct	45 ms	47804 KB	Output is correct
9	Correct	45 ms	47964 KB	Output is correct
10	Correct	46 ms	48092 KB	Output is correct
11	Correct	44 ms	110388 KB	Output is correct
12	Correct	47 ms	110388 KB	Output is correct
13	Correct	48 ms	110388 KB	Output is correct
14	Correct	45 ms	110388 KB	Output is correct
15	Correct	47 ms	110388 KB	Output is correct
16	Correct	48 ms	110388 KB	Output is correct
17	Correct	62 ms	110388 KB	Output is correct
18	Correct	49 ms	110388 KB	Output is correct
19	Correct	47 ms	110388 KB	Output is correct
20	Correct	48 ms	110388 KB	Output is correct
21	Correct	62 ms	110388 KB	Output is correct
22	Correct	81 ms	110388 KB	Output is correct
23	Correct	89 ms	110388 KB	Output is correct
24	Correct	114 ms	110388 KB	Output is correct
25	Correct	59 ms	110388 KB	Output is correct
26	Correct	88 ms	110388 KB	Output is correct
27	Correct	102 ms	110388 KB	Output is correct
28	Correct	97 ms	110388 KB	Output is correct
29	Correct	76 ms	110388 KB	Output is correct
30	Correct	109 ms	110388 KB	Output is correct

Subtask #5
31.0 / 31.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	42 ms	47224 KB	Output is correct
2	Correct	46 ms	47732 KB	Output is correct
3	Correct	44 ms	47804 KB	Output is correct
4	Correct	43 ms	47804 KB	Output is correct
5	Correct	42 ms	47804 KB	Output is correct
6	Correct	45 ms	47804 KB	Output is correct
7	Correct	46 ms	47804 KB	Output is correct
8	Correct	45 ms	47804 KB	Output is correct
9	Correct	45 ms	47964 KB	Output is correct
10	Correct	46 ms	48092 KB	Output is correct
11	Correct	488 ms	67976 KB	Output is correct
12	Correct	1264 ms	97876 KB	Output is correct
13	Correct	940 ms	106428 KB	Output is correct
14	Correct	1313 ms	106428 KB	Output is correct
15	Correct	1311 ms	106428 KB	Output is correct
16	Correct	1390 ms	106428 KB	Output is correct
17	Correct	920 ms	106428 KB	Output is correct
18	Correct	1906 ms	106428 KB	Output is correct
19	Correct	2145 ms	110388 KB	Output is correct
20	Correct	841 ms	110388 KB	Output is correct
21	Correct	44 ms	110388 KB	Output is correct
22	Correct	47 ms	110388 KB	Output is correct
23	Correct	48 ms	110388 KB	Output is correct
24	Correct	45 ms	110388 KB	Output is correct
25	Correct	47 ms	110388 KB	Output is correct
26	Correct	48 ms	110388 KB	Output is correct
27	Correct	62 ms	110388 KB	Output is correct
28	Correct	49 ms	110388 KB	Output is correct
29	Correct	47 ms	110388 KB	Output is correct
30	Correct	48 ms	110388 KB	Output is correct
31	Correct	62 ms	110388 KB	Output is correct
32	Correct	81 ms	110388 KB	Output is correct
33	Correct	89 ms	110388 KB	Output is correct
34	Correct	114 ms	110388 KB	Output is correct
35	Correct	59 ms	110388 KB	Output is correct
36	Correct	88 ms	110388 KB	Output is correct
37	Correct	102 ms	110388 KB	Output is correct
38	Correct	97 ms	110388 KB	Output is correct
39	Correct	76 ms	110388 KB	Output is correct
40	Correct	109 ms	110388 KB	Output is correct
41	Correct	275 ms	110388 KB	Output is correct
42	Correct	834 ms	110388 KB	Output is correct
43	Correct	324 ms	110388 KB	Output is correct
44	Correct	740 ms	110388 KB	Output is correct
45	Correct	879 ms	110388 KB	Output is correct
46	Correct	806 ms	110388 KB	Output is correct
47	Correct	1115 ms	110388 KB	Output is correct
48	Correct	525 ms	110388 KB	Output is correct
49	Correct	813 ms	110388 KB	Output is correct
50	Correct	857 ms	110388 KB	Output is correct
51	Correct	377 ms	110388 KB	Output is correct
52	Correct	636 ms	110388 KB	Output is correct
53	Correct	522 ms	110388 KB	Output is correct
54	Correct	1426 ms	110388 KB	Output is correct
55	Correct	1093 ms	110388 KB	Output is correct

Submission #62475

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