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IDProblemSubmitterResultTimeMemoryLanguageFile sizeSubmit timeJudge time
#711371#9525. Welcome to Join the Online Meeting!xyz123#WA 11ms30504kbC++232.3kb2024-11-05 10:02:312024-11-05 10:02:31

Judging History

你现在查看的是最新测评结果

  • [2024-11-05 10:02:31]
  • 评测
  • 测评结果:WA
  • 用时:11ms
  • 内存:30504kb
  • [2024-11-05 10:02:31]
  • 提交

answer

#include<bits/stdc++.h>
using namespace std;
const long long mod=1e9+7;
long long T,a,b,c,d[1000001],v[1000001],o,h[1000001],fa[1000001],q,w,e,an,cn,fac[1000001],inv[1000001],st[1000001],u[1000001],cn1,cn2,st1[1000001],st2[1000001];
char s[1000001],bg,ls;
struct p{long long q,w;}l[1000001];
long long pow_(long long qq,long long ww){long long ee=1;while(ww){if(ww&1) ee*=qq,ee%=mod;qq*=qq,qq%=mod,ww>>=1;}return ee%mod;}
inline int read(){int x=0,f=1;char c=getchar();while(c<'0'||c>'9'){if(c=='-')f=-1;c=getchar();}while(c>='0'&&c<='9'){x=(x<<3)+(x<<1)+c-'0';c=getchar();}return x*f;}
void add(long long qq,long long ww){l[++o].q=ww,l[o].w=h[qq],h[qq]=o;}
long long gcd(long long qq,long long ww){return !ww?qq:gcd(ww,qq%ww);}
long long find(long long qq){return qq==fa[qq]?qq:fa[qq]=find(fa[qq]);}
void merge(long long qq,long long ww){long long f1=find(qq),f2=find(ww);if(f1==f2) return;fa[f1]=f2;}
long long C(long long qq,long long ww){return fac[qq]*inv[ww]%mod*inv[qq-ww]%mod;}
char t[4];
vector<int> qu[1000001],ve[1000001];
queue<int> quu;
int main()
{
//	freopen("1.in","r",stdin);
	srand((unsigned)(time(0)^(*new int)));
	fac[0]=1;for(int i=1;i<=1000000;i++) fac[i]=fac[i-1]*i%mod;
	inv[1000000]=pow_(fac[1000000],mod-2);for(int i=999999;i>=0;i--) inv[i]=inv[i+1]*(i+1)%mod;
	T=1;
	t[0]='N';
	t[1]='E';
	t[2]='S';
	t[3]='W';
//	scanf("%lld",&T);
	for(int ii=1;ii<=T;ii++)
	{
		scanf("%lld%lld%lld",&a,&b,&c);
		for(int i=1;i<=c;i++) d[i]=read(),v[d[i]]=1;
		for(int i=1;i<=b;i++)
		{
			q=read(),w=read();
			qu[q].push_back(w);
			qu[w].push_back(q);
		}
		int rt=0;
		for(int i=1;i<=a;i++)
		{
			if(!v[i])
			{
				rt=i;
				break;
			}
		}
		if(!rt)
		{
			printf("No");return 0;
		}
		h[rt]=1;
		quu.push(rt);
		while(!quu.empty())
		{
			int r=quu.front();quu.pop();
			for(int i=0;i<qu[r].size();i++)
			{
				if(!h[qu[r][i]])
				{
					h[qu[r][i]]=1;
					ve[r].push_back(qu[r][i]);
					if(!v[qu[r][i]]) quu.push(qu[r][i]);
				}
			}
			if(ve[r].size()>0) st[++cn]=r;
		}
		for(int i=1;i<=a;i++)
		{
			if(!h[i])
			{
				printf("No");return 0;
			}
		}
		printf("Yes\n");
		printf("%lld\n",cn);
		for(int i=1;i<=cn;i++)
		{
			printf("%lld ",st[i]);
			for(int j=0;j<ve[st[i]].size();j++) printf("%d ",ve[st[i]][j]);
			printf("\n");
		}
	}
	return 0;
}

Details

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Test #1:

score: 0
Wrong Answer
time: 11ms
memory: 30504kb

input:

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

output:

Yes
2
1 2 3 
2 4 

result:

wrong answer on step #2, member 4 invited others when being banned