Submission #137491

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
137491	2019-07-28T04:49:17 Z	mohammedehab2002	Parachute rings (IOI12_rings)	C++11	100 / 100	2690 ms	80592 KB

rings

#include <bits/stdc++.h>
using namespace std;
vector<pair<int,int> > e;
struct graph
{
	int v,par[1000005],deg[1000005],sz[1000005],cyc,csz;
	pair<int,int> mx;
	graph()
	{
		v=-1;
		cyc=0;
		mx={0,0};
		for (int i=0;i<1e6;i++)
		{
			par[i]=i;
			deg[i]=0;
			sz[i]=1;
		}
	}
	int find(int x)
	{
		if (par[x]!=x)
		par[x]=find(par[x]);
		return par[x];
	}
	void Union(int x,int y)
	{
		deg[x]++;
		deg[y]++;
		mx=max(mx,{deg[x],x});
		mx=max(mx,{deg[y],y});
		x=find(x);
		y=find(y);
		if (x==y)
		{
			cyc++;
			csz=sz[x];
		}
		else
		{
			par[x]=y;
			sz[y]+=sz[x];
		}
	}
};
int n;
graph g[5];
bool f;
void Init(int nn)
{
	n=nn;
}
void Link(int a,int b)
{
	e.push_back({a,b});
	if (!f)
	{
		g[0].Union(a,b);
		if (g[0].mx.first==3)
		{
			f=1;
			vector<int> cur({g[0].mx.second});
			for (auto p:e)
			{
				if (p.first==cur[0] || p.second==cur[0])
				cur.push_back(p.first^p.second^cur[0]);
			}
			for (int i=0;i<4;i++)
			{
				g[i+1].v=cur[i];
				for (auto p:e)
				{
					if (p.first!=cur[i] && p.second!=cur[i])
					g[i+1].Union(p.first,p.second);
				}
			}
		}
	}
	else
	{
		for (int i=1;i<5;i++)
		{
			if (g[i].v!=a && g[i].v!=b)
			g[i].Union(a,b);
		}
	}
}
int CountCritical()
{
	if (!f)
	{
		if (!g[0].cyc)
		return n;
		if (g[0].cyc>1)
		return 0;
		return g[0].csz;
	}
	int ans=0;
	for (int i=1;i<5;i++)
	ans+=(g[i].mx.first<=2 && !g[i].cyc);
	return ans;
}

Subtask #1
20.0 / 20.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	55 ms	59000 KB	Output is correct
2	Correct	58 ms	59132 KB	Output is correct
3	Correct	58 ms	59340 KB	Output is correct
4	Correct	57 ms	59128 KB	Output is correct
5	Correct	57 ms	59128 KB	Output is correct
6	Correct	57 ms	59256 KB	Output is correct
7	Correct	65 ms	59000 KB	Output is correct
8	Correct	57 ms	59128 KB	Output is correct
9	Correct	57 ms	59256 KB	Output is correct
10	Correct	58 ms	59256 KB	Output is correct

Subtask #2
17.0 / 17.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	288 ms	63720 KB	Output is correct
2	Correct	1575 ms	68092 KB	Output is correct
3	Correct	2690 ms	79336 KB	Output is correct
4	Correct	720 ms	80592 KB	Output is correct
5	Correct	641 ms	80560 KB	Output is correct
6	Correct	721 ms	79724 KB	Output is correct
7	Correct	2484 ms	78676 KB	Output is correct
8	Correct	1507 ms	79148 KB	Output is correct
9	Correct	1465 ms	80444 KB	Output is correct
10	Correct	548 ms	79872 KB	Output is correct

Subtask #3
18.0 / 18.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	55 ms	59000 KB	Output is correct
2	Correct	58 ms	59132 KB	Output is correct
3	Correct	58 ms	59340 KB	Output is correct
4	Correct	57 ms	59128 KB	Output is correct
5	Correct	57 ms	59128 KB	Output is correct
6	Correct	57 ms	59256 KB	Output is correct
7	Correct	65 ms	59000 KB	Output is correct
8	Correct	57 ms	59128 KB	Output is correct
9	Correct	57 ms	59256 KB	Output is correct
10	Correct	58 ms	59256 KB	Output is correct
11	Correct	58 ms	59252 KB	Output is correct
12	Correct	62 ms	59356 KB	Output is correct
13	Correct	59 ms	59392 KB	Output is correct
14	Correct	59 ms	59256 KB	Output is correct
15	Correct	58 ms	59256 KB	Output is correct
16	Correct	58 ms	59332 KB	Output is correct
17	Correct	60 ms	59324 KB	Output is correct
18	Correct	63 ms	59416 KB	Output is correct
19	Correct	59 ms	59356 KB	Output is correct
20	Correct	61 ms	59460 KB	Output is correct

Subtask #4
14.0 / 14.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	55 ms	59000 KB	Output is correct
2	Correct	58 ms	59132 KB	Output is correct
3	Correct	58 ms	59340 KB	Output is correct
4	Correct	57 ms	59128 KB	Output is correct
5	Correct	57 ms	59128 KB	Output is correct
6	Correct	57 ms	59256 KB	Output is correct
7	Correct	65 ms	59000 KB	Output is correct
8	Correct	57 ms	59128 KB	Output is correct
9	Correct	57 ms	59256 KB	Output is correct
10	Correct	58 ms	59256 KB	Output is correct
11	Correct	58 ms	59252 KB	Output is correct
12	Correct	62 ms	59356 KB	Output is correct
13	Correct	59 ms	59392 KB	Output is correct
14	Correct	59 ms	59256 KB	Output is correct
15	Correct	58 ms	59256 KB	Output is correct
16	Correct	58 ms	59332 KB	Output is correct
17	Correct	60 ms	59324 KB	Output is correct
18	Correct	63 ms	59416 KB	Output is correct
19	Correct	59 ms	59356 KB	Output is correct
20	Correct	61 ms	59460 KB	Output is correct
21	Correct	71 ms	59968 KB	Output is correct
22	Correct	81 ms	60536 KB	Output is correct
23	Correct	94 ms	60692 KB	Output is correct
24	Correct	113 ms	60516 KB	Output is correct
25	Correct	69 ms	59488 KB	Output is correct
26	Correct	95 ms	60660 KB	Output is correct
27	Correct	89 ms	61324 KB	Output is correct
28	Correct	107 ms	61100 KB	Output is correct
29	Correct	91 ms	60168 KB	Output is correct
30	Correct	93 ms	61200 KB	Output is correct

Subtask #5
31.0 / 31.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	55 ms	59000 KB	Output is correct
2	Correct	58 ms	59132 KB	Output is correct
3	Correct	58 ms	59340 KB	Output is correct
4	Correct	57 ms	59128 KB	Output is correct
5	Correct	57 ms	59128 KB	Output is correct
6	Correct	57 ms	59256 KB	Output is correct
7	Correct	65 ms	59000 KB	Output is correct
8	Correct	57 ms	59128 KB	Output is correct
9	Correct	57 ms	59256 KB	Output is correct
10	Correct	58 ms	59256 KB	Output is correct
11	Correct	288 ms	63720 KB	Output is correct
12	Correct	1575 ms	68092 KB	Output is correct
13	Correct	2690 ms	79336 KB	Output is correct
14	Correct	720 ms	80592 KB	Output is correct
15	Correct	641 ms	80560 KB	Output is correct
16	Correct	721 ms	79724 KB	Output is correct
17	Correct	2484 ms	78676 KB	Output is correct
18	Correct	1507 ms	79148 KB	Output is correct
19	Correct	1465 ms	80444 KB	Output is correct
20	Correct	548 ms	79872 KB	Output is correct
21	Correct	58 ms	59252 KB	Output is correct
22	Correct	62 ms	59356 KB	Output is correct
23	Correct	59 ms	59392 KB	Output is correct
24	Correct	59 ms	59256 KB	Output is correct
25	Correct	58 ms	59256 KB	Output is correct
26	Correct	58 ms	59332 KB	Output is correct
27	Correct	60 ms	59324 KB	Output is correct
28	Correct	63 ms	59416 KB	Output is correct
29	Correct	59 ms	59356 KB	Output is correct
30	Correct	61 ms	59460 KB	Output is correct
31	Correct	71 ms	59968 KB	Output is correct
32	Correct	81 ms	60536 KB	Output is correct
33	Correct	94 ms	60692 KB	Output is correct
34	Correct	113 ms	60516 KB	Output is correct
35	Correct	69 ms	59488 KB	Output is correct
36	Correct	95 ms	60660 KB	Output is correct
37	Correct	89 ms	61324 KB	Output is correct
38	Correct	107 ms	61100 KB	Output is correct
39	Correct	91 ms	60168 KB	Output is correct
40	Correct	93 ms	61200 KB	Output is correct
41	Correct	218 ms	66668 KB	Output is correct
42	Correct	650 ms	71840 KB	Output is correct
43	Correct	382 ms	64868 KB	Output is correct
44	Correct	1426 ms	78664 KB	Output is correct
45	Correct	1603 ms	76268 KB	Output is correct
46	Correct	546 ms	78516 KB	Output is correct
47	Correct	540 ms	78680 KB	Output is correct
48	Correct	1026 ms	69952 KB	Output is correct
49	Correct	501 ms	77524 KB	Output is correct
50	Correct	521 ms	77232 KB	Output is correct
51	Correct	497 ms	65464 KB	Output is correct
52	Correct	1229 ms	75880 KB	Output is correct
53	Correct	1153 ms	69264 KB	Output is correct
54	Correct	1527 ms	77844 KB	Output is correct
55	Correct	2286 ms	78616 KB	Output is correct

Submission #137491

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