Submission #62478

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
62478	2018-07-28T18:15:59 Z	zetapi	Parachute rings (IOI12_rings)	C++14	100 / 100	2013 ms	110324 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,a,b;

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)
{
	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 X,int Y) 
{
	a=X;
	b=Y;
	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;
			return ;
		}
		cnt++;
		if(cnt==1)
		{
			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	41 ms	47352 KB	Output is correct
2	Correct	45 ms	47840 KB	Output is correct
3	Correct	45 ms	47840 KB	Output is correct
4	Correct	47 ms	47840 KB	Output is correct
5	Correct	45 ms	47840 KB	Output is correct
6	Correct	45 ms	47840 KB	Output is correct
7	Correct	45 ms	47840 KB	Output is correct
8	Correct	43 ms	47840 KB	Output is correct
9	Correct	43 ms	47968 KB	Output is correct
10	Correct	44 ms	47968 KB	Output is correct

Subtask #2
17.0 / 17.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	480 ms	68100 KB	Output is correct
2	Correct	1210 ms	98028 KB	Output is correct
3	Correct	969 ms	106308 KB	Output is correct
4	Correct	1284 ms	106308 KB	Output is correct
5	Correct	1290 ms	106308 KB	Output is correct
6	Correct	1354 ms	106308 KB	Output is correct
7	Correct	892 ms	106308 KB	Output is correct
8	Correct	1841 ms	106308 KB	Output is correct
9	Correct	2013 ms	110324 KB	Output is correct
10	Correct	818 ms	110324 KB	Output is correct

Subtask #3
18.0 / 18.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	41 ms	47352 KB	Output is correct
2	Correct	45 ms	47840 KB	Output is correct
3	Correct	45 ms	47840 KB	Output is correct
4	Correct	47 ms	47840 KB	Output is correct
5	Correct	45 ms	47840 KB	Output is correct
6	Correct	45 ms	47840 KB	Output is correct
7	Correct	45 ms	47840 KB	Output is correct
8	Correct	43 ms	47840 KB	Output is correct
9	Correct	43 ms	47968 KB	Output is correct
10	Correct	44 ms	47968 KB	Output is correct
11	Correct	45 ms	110324 KB	Output is correct
12	Correct	47 ms	110324 KB	Output is correct
13	Correct	48 ms	110324 KB	Output is correct
14	Correct	51 ms	110324 KB	Output is correct
15	Correct	50 ms	110324 KB	Output is correct
16	Correct	47 ms	110324 KB	Output is correct
17	Correct	46 ms	110324 KB	Output is correct
18	Correct	48 ms	110324 KB	Output is correct
19	Correct	58 ms	110324 KB	Output is correct
20	Correct	49 ms	110324 KB	Output is correct

Subtask #4
14.0 / 14.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	41 ms	47352 KB	Output is correct
2	Correct	45 ms	47840 KB	Output is correct
3	Correct	45 ms	47840 KB	Output is correct
4	Correct	47 ms	47840 KB	Output is correct
5	Correct	45 ms	47840 KB	Output is correct
6	Correct	45 ms	47840 KB	Output is correct
7	Correct	45 ms	47840 KB	Output is correct
8	Correct	43 ms	47840 KB	Output is correct
9	Correct	43 ms	47968 KB	Output is correct
10	Correct	44 ms	47968 KB	Output is correct
11	Correct	45 ms	110324 KB	Output is correct
12	Correct	47 ms	110324 KB	Output is correct
13	Correct	48 ms	110324 KB	Output is correct
14	Correct	51 ms	110324 KB	Output is correct
15	Correct	50 ms	110324 KB	Output is correct
16	Correct	47 ms	110324 KB	Output is correct
17	Correct	46 ms	110324 KB	Output is correct
18	Correct	48 ms	110324 KB	Output is correct
19	Correct	58 ms	110324 KB	Output is correct
20	Correct	49 ms	110324 KB	Output is correct
21	Correct	64 ms	110324 KB	Output is correct
22	Correct	75 ms	110324 KB	Output is correct
23	Correct	85 ms	110324 KB	Output is correct
24	Correct	91 ms	110324 KB	Output is correct
25	Correct	58 ms	110324 KB	Output is correct
26	Correct	90 ms	110324 KB	Output is correct
27	Correct	92 ms	110324 KB	Output is correct
28	Correct	91 ms	110324 KB	Output is correct
29	Correct	83 ms	110324 KB	Output is correct
30	Correct	100 ms	110324 KB	Output is correct

Subtask #5
31.0 / 31.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	41 ms	47352 KB	Output is correct
2	Correct	45 ms	47840 KB	Output is correct
3	Correct	45 ms	47840 KB	Output is correct
4	Correct	47 ms	47840 KB	Output is correct
5	Correct	45 ms	47840 KB	Output is correct
6	Correct	45 ms	47840 KB	Output is correct
7	Correct	45 ms	47840 KB	Output is correct
8	Correct	43 ms	47840 KB	Output is correct
9	Correct	43 ms	47968 KB	Output is correct
10	Correct	44 ms	47968 KB	Output is correct
11	Correct	480 ms	68100 KB	Output is correct
12	Correct	1210 ms	98028 KB	Output is correct
13	Correct	969 ms	106308 KB	Output is correct
14	Correct	1284 ms	106308 KB	Output is correct
15	Correct	1290 ms	106308 KB	Output is correct
16	Correct	1354 ms	106308 KB	Output is correct
17	Correct	892 ms	106308 KB	Output is correct
18	Correct	1841 ms	106308 KB	Output is correct
19	Correct	2013 ms	110324 KB	Output is correct
20	Correct	818 ms	110324 KB	Output is correct
21	Correct	45 ms	110324 KB	Output is correct
22	Correct	47 ms	110324 KB	Output is correct
23	Correct	48 ms	110324 KB	Output is correct
24	Correct	51 ms	110324 KB	Output is correct
25	Correct	50 ms	110324 KB	Output is correct
26	Correct	47 ms	110324 KB	Output is correct
27	Correct	46 ms	110324 KB	Output is correct
28	Correct	48 ms	110324 KB	Output is correct
29	Correct	58 ms	110324 KB	Output is correct
30	Correct	49 ms	110324 KB	Output is correct
31	Correct	64 ms	110324 KB	Output is correct
32	Correct	75 ms	110324 KB	Output is correct
33	Correct	85 ms	110324 KB	Output is correct
34	Correct	91 ms	110324 KB	Output is correct
35	Correct	58 ms	110324 KB	Output is correct
36	Correct	90 ms	110324 KB	Output is correct
37	Correct	92 ms	110324 KB	Output is correct
38	Correct	91 ms	110324 KB	Output is correct
39	Correct	83 ms	110324 KB	Output is correct
40	Correct	100 ms	110324 KB	Output is correct
41	Correct	294 ms	110324 KB	Output is correct
42	Correct	890 ms	110324 KB	Output is correct
43	Correct	325 ms	110324 KB	Output is correct
44	Correct	764 ms	110324 KB	Output is correct
45	Correct	899 ms	110324 KB	Output is correct
46	Correct	839 ms	110324 KB	Output is correct
47	Correct	1217 ms	110324 KB	Output is correct
48	Correct	606 ms	110324 KB	Output is correct
49	Correct	806 ms	110324 KB	Output is correct
50	Correct	899 ms	110324 KB	Output is correct
51	Correct	361 ms	110324 KB	Output is correct
52	Correct	616 ms	110324 KB	Output is correct
53	Correct	533 ms	110324 KB	Output is correct
54	Correct	1505 ms	110324 KB	Output is correct
55	Correct	1149 ms	110324 KB	Output is correct

Submission #62478

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