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IDProblemSubmitterResultTimeMemoryLanguageFile sizeSubmit timeJudge time
#426399#6329. Colorful GraphKevin5307WA 218ms11020kbC++231.9kb2024-05-31 10:07:232024-05-31 10:07:26

Judging History

你现在查看的是最新测评结果

  • [2024-05-31 10:07:26]
  • 评测
  • 测评结果:WA
  • 用时:218ms
  • 内存:11020kb
  • [2024-05-31 10:07:23]
  • 提交

answer

#include<bits/stdc++.h>
using namespace std;
#define pb emplace_back
int n,m;
vector<int> G[7007],rG[7007],nG[7007];
int vis[7007],scc[7007],tot;
vector<int> ord;
void dfs1(int u)
{
	vis[u]=1;
	for(auto v:G[u])
		if(!vis[v])
			dfs1(v);
	ord.pb(u);
}
void dfs2(int u,int c)
{
	scc[u]=c;
	for(auto v:rG[u])
		if(!scc[v])
			dfs2(v,c);
}
bitset<7007> E[7007];
void dfs(int u,int frm)
{
	E[frm][u]=1;
	for(auto v:nG[u])
		if(!E[frm][v])
			dfs(v,frm);
}
int Match[7007],MatchR[7007];
bitset<7007> flag;
int lst[7007];
int match(int x)
{
	queue<int> q;
	flag=0;
	memset(lst,-1,sizeof(lst));
	q.push(x);
	while(!q.empty())
	{
		int u=q.front();
		q.pop();
		bitset<7007> tmp=(E[u]&flag)^E[u];
		flag|=E[u];
		for(int p=tmp._Find_first();p!=tmp.size();p=tmp._Find_next(p))
		{
			if(!Match[p])
			{
				Match[p]=x;
				while(u!=x)
				{
					int v=MatchR[x];
					MatchR[x]=p;
					p=v;
					x=lst[p];
					Match[p]=x;
				}
				MatchR[x]=p;
				return 1;
			}
			lst[p]=u;
		}
	}
	return 0;
}
int fa[7007],ind[7007];
inline int anc(int x)
{
	while(fa[x]!=x) x=fa[x]=fa[fa[x]];
	return x;
}
int main()
{
	ios::sync_with_stdio(false);
	cin.tie(0);
	cout.tie(0);
	cin>>n>>m;
	for(int i=1;i<=m;i++)
	{
		int u,v;
		cin>>u>>v;
		G[u].pb(v);
		rG[v].pb(u);
	}
	for(int i=1;i<=n;i++)
		if(!vis[i])
			dfs1(i);
	reverse(ord.begin(),ord.end());
	for(auto x:ord)
		if(!scc[x])
			dfs2(x,++tot);
	for(int i=1;i<=n;i++)
		for(auto j:G[i])
			if(scc[i]!=scc[j])
				nG[scc[i]].pb(scc[j]);
	for(int i=1;i<=tot;i++)
		dfs(i,i);
	for(int i=1;i<=tot;i++)
		E[i][i]=0;
	int val=0;
	for(int i=1;i<=tot;i++)
		val+=match(i);
	for(int i=1;i<=tot;i++)
		fa[i]=i;
	for(int i=1;i<=tot;i++)
		if(MatchR[i])
			fa[anc(i)]=anc(MatchR[i]);
	int cnt=0;
	for(int i=1;i<=tot;i++)
		if(fa[i]==i)
			ind[i]=++cnt;
	for(int i=1;i<=n;i++)
		cout<<ind[anc(scc[i])]<<" ";
	return 0;
}

Details

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Test #1:

score: 100
Accepted
time: 1ms
memory: 3628kb

input:

5 5
1 4
2 3
1 3
2 5
5 1

output:

1 1 1 2 1 

result:

ok AC

Test #2:

score: 0
Accepted
time: 1ms
memory: 3916kb

input:

5 7
1 2
2 1
4 3
5 1
5 4
4 1
4 5

output:

2 2 1 1 1 

result:

ok AC

Test #3:

score: 0
Accepted
time: 1ms
memory: 3632kb

input:

8 6
6 1
3 4
3 6
2 3
4 1
6 4

output:

4 4 4 4 3 4 2 1 

result:

ok AC

Test #4:

score: -100
Wrong Answer
time: 218ms
memory: 11020kb

input:

7000 6999
4365 4296
2980 3141
6820 4995
4781 24
2416 5844
2940 2675
3293 2163
3853 5356
262 6706
1985 1497
5241 3803
353 1624
5838 4708
5452 3019
2029 6161
3849 4219
1095 1453
4268 4567
1184 1857
2911 3977
1662 2751
6353 6496
2002 6628
1407 4623
425 1331
4445 4277
1259 3165
4994 1044
2756 5788
5496 ...

output:

1479 786 1424 975 166 927 86 1348 771 246 479 555 771 1592 1049 694 1821 19 916 2312 1577 1752 385 1091 776 641 640 650 1266 639 587 1704 638 637 1364 1363 2051 18 1436 636 226 634 635 1803 634 1650 17 1407 633 16 1435 632 459 801 811 2150 1489 631 1014 630 1719 137 805 294 2179 629 272 1186 1073 62...

result:

wrong answer Integer 1821 violates the range [1, 1750]