Submission #62470

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
62470	2018-07-28T18:01:18 Z	zetapi	Parachute rings (IOI12_rings)	C++14	100 / 100	2062 ms	110268 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++;
			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	48 ms	47352 KB	Output is correct
2	Correct	48 ms	47840 KB	Output is correct
3	Correct	47 ms	47840 KB	Output is correct
4	Correct	45 ms	47840 KB	Output is correct
5	Correct	44 ms	47840 KB	Output is correct
6	Correct	52 ms	47840 KB	Output is correct
7	Correct	43 ms	47840 KB	Output is correct
8	Correct	46 ms	47840 KB	Output is correct
9	Correct	49 ms	47864 KB	Output is correct
10	Correct	48 ms	47864 KB	Output is correct

Subtask #2
17.0 / 17.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	478 ms	67944 KB	Output is correct
2	Correct	1308 ms	97656 KB	Output is correct
3	Correct	970 ms	106232 KB	Output is correct
4	Correct	1279 ms	106232 KB	Output is correct
5	Correct	1270 ms	106232 KB	Output is correct
6	Correct	1369 ms	106232 KB	Output is correct
7	Correct	914 ms	106232 KB	Output is correct
8	Correct	1901 ms	106260 KB	Output is correct
9	Correct	2062 ms	110268 KB	Output is correct
10	Correct	1044 ms	110268 KB	Output is correct

Subtask #3
18.0 / 18.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	48 ms	47352 KB	Output is correct
2	Correct	48 ms	47840 KB	Output is correct
3	Correct	47 ms	47840 KB	Output is correct
4	Correct	45 ms	47840 KB	Output is correct
5	Correct	44 ms	47840 KB	Output is correct
6	Correct	52 ms	47840 KB	Output is correct
7	Correct	43 ms	47840 KB	Output is correct
8	Correct	46 ms	47840 KB	Output is correct
9	Correct	49 ms	47864 KB	Output is correct
10	Correct	48 ms	47864 KB	Output is correct
11	Correct	44 ms	110268 KB	Output is correct
12	Correct	47 ms	110268 KB	Output is correct
13	Correct	48 ms	110268 KB	Output is correct
14	Correct	45 ms	110268 KB	Output is correct
15	Correct	45 ms	110268 KB	Output is correct
16	Correct	48 ms	110268 KB	Output is correct
17	Correct	51 ms	110268 KB	Output is correct
18	Correct	51 ms	110268 KB	Output is correct
19	Correct	48 ms	110268 KB	Output is correct
20	Correct	65 ms	110268 KB	Output is correct

Subtask #4
14.0 / 14.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	48 ms	47352 KB	Output is correct
2	Correct	48 ms	47840 KB	Output is correct
3	Correct	47 ms	47840 KB	Output is correct
4	Correct	45 ms	47840 KB	Output is correct
5	Correct	44 ms	47840 KB	Output is correct
6	Correct	52 ms	47840 KB	Output is correct
7	Correct	43 ms	47840 KB	Output is correct
8	Correct	46 ms	47840 KB	Output is correct
9	Correct	49 ms	47864 KB	Output is correct
10	Correct	48 ms	47864 KB	Output is correct
11	Correct	44 ms	110268 KB	Output is correct
12	Correct	47 ms	110268 KB	Output is correct
13	Correct	48 ms	110268 KB	Output is correct
14	Correct	45 ms	110268 KB	Output is correct
15	Correct	45 ms	110268 KB	Output is correct
16	Correct	48 ms	110268 KB	Output is correct
17	Correct	51 ms	110268 KB	Output is correct
18	Correct	51 ms	110268 KB	Output is correct
19	Correct	48 ms	110268 KB	Output is correct
20	Correct	65 ms	110268 KB	Output is correct
21	Correct	68 ms	110268 KB	Output is correct
22	Correct	79 ms	110268 KB	Output is correct
23	Correct	92 ms	110268 KB	Output is correct
24	Correct	90 ms	110268 KB	Output is correct
25	Correct	57 ms	110268 KB	Output is correct
26	Correct	89 ms	110268 KB	Output is correct
27	Correct	106 ms	110268 KB	Output is correct
28	Correct	110 ms	110268 KB	Output is correct
29	Correct	80 ms	110268 KB	Output is correct
30	Correct	107 ms	110268 KB	Output is correct

Subtask #5
31.0 / 31.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	48 ms	47352 KB	Output is correct
2	Correct	48 ms	47840 KB	Output is correct
3	Correct	47 ms	47840 KB	Output is correct
4	Correct	45 ms	47840 KB	Output is correct
5	Correct	44 ms	47840 KB	Output is correct
6	Correct	52 ms	47840 KB	Output is correct
7	Correct	43 ms	47840 KB	Output is correct
8	Correct	46 ms	47840 KB	Output is correct
9	Correct	49 ms	47864 KB	Output is correct
10	Correct	48 ms	47864 KB	Output is correct
11	Correct	478 ms	67944 KB	Output is correct
12	Correct	1308 ms	97656 KB	Output is correct
13	Correct	970 ms	106232 KB	Output is correct
14	Correct	1279 ms	106232 KB	Output is correct
15	Correct	1270 ms	106232 KB	Output is correct
16	Correct	1369 ms	106232 KB	Output is correct
17	Correct	914 ms	106232 KB	Output is correct
18	Correct	1901 ms	106260 KB	Output is correct
19	Correct	2062 ms	110268 KB	Output is correct
20	Correct	1044 ms	110268 KB	Output is correct
21	Correct	44 ms	110268 KB	Output is correct
22	Correct	47 ms	110268 KB	Output is correct
23	Correct	48 ms	110268 KB	Output is correct
24	Correct	45 ms	110268 KB	Output is correct
25	Correct	45 ms	110268 KB	Output is correct
26	Correct	48 ms	110268 KB	Output is correct
27	Correct	51 ms	110268 KB	Output is correct
28	Correct	51 ms	110268 KB	Output is correct
29	Correct	48 ms	110268 KB	Output is correct
30	Correct	65 ms	110268 KB	Output is correct
31	Correct	68 ms	110268 KB	Output is correct
32	Correct	79 ms	110268 KB	Output is correct
33	Correct	92 ms	110268 KB	Output is correct
34	Correct	90 ms	110268 KB	Output is correct
35	Correct	57 ms	110268 KB	Output is correct
36	Correct	89 ms	110268 KB	Output is correct
37	Correct	106 ms	110268 KB	Output is correct
38	Correct	110 ms	110268 KB	Output is correct
39	Correct	80 ms	110268 KB	Output is correct
40	Correct	107 ms	110268 KB	Output is correct
41	Correct	268 ms	110268 KB	Output is correct
42	Correct	866 ms	110268 KB	Output is correct
43	Correct	336 ms	110268 KB	Output is correct
44	Correct	723 ms	110268 KB	Output is correct
45	Correct	885 ms	110268 KB	Output is correct
46	Correct	978 ms	110268 KB	Output is correct
47	Correct	1152 ms	110268 KB	Output is correct
48	Correct	539 ms	110268 KB	Output is correct
49	Correct	823 ms	110268 KB	Output is correct
50	Correct	886 ms	110268 KB	Output is correct
51	Correct	359 ms	110268 KB	Output is correct
52	Correct	641 ms	110268 KB	Output is correct
53	Correct	532 ms	110268 KB	Output is correct
54	Correct	1578 ms	110268 KB	Output is correct
55	Correct	1162 ms	110268 KB	Output is correct

Submission #62470

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