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QOJ
ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
---|---|---|---|---|---|---|---|---|---|
#230644 | #7640. Colorful Cycles | ucup-team2303# | WA | 238ms | 92884kb | C++14 | 4.0kb | 2023-10-28 20:01:57 | 2023-10-28 20:01:57 |
Judging History
answer
#include<bits/stdc++.h>
using namespace std;
mt19937_64 rnd(time(0));
long long T,a,b,c,d[1000001],v[1000001],o,h[1000001],fa[1000001],q,w,e,an,cn,u[1000001],dfn[1000001],low[1000001],cnt=0,de[1000001],stt[1000001],cnn,vi[1000001];
struct p{long long q,w,e;}l[2000001],m[2000001];
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,long long ee){l[++o].q=ww,l[o].w=h[qq],l[o].e=ee,h[qq]=o;}
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;}
bool cmp(p qq,p ww){if(qq.q==ww.q&&qq.w==ww.w) return qq.e<ww.e;if(qq.q==ww.q) return qq.w<ww.w;return qq.q<ww.q;}
vector<p> qu[1000001];
void add1(long long qq,long long ww,long long ee,long long rr){qu[qq].push_back(p{ww,ee,rr});}
struct pp{long long q;p w;}st[1000001];
vector<vector<pp>> quu;
void dfs(long long qq,long long ww)
{
dfn[qq]=low[qq]=++cnt;
for(int i=0;i<qu[qq].size();i++)
{
if(qu[qq][i].w!=ww)
{
if(!dfn[qu[qq][i].q])
{
st[++cn]=pp{qq,qu[qq][i]};
dfs(qu[qq][i].q,qu[qq][i].w);
low[qq]=min(low[qq],low[qu[qq][i].q]);
if(low[qu[qq][i].q]>=dfn[qq])
{
vector<pp> tmp;tmp.clear();
while(st[cn].w.e!=qu[qq][i].e)
{
tmp.push_back(st[cn]);
--cn;
}tmp.push_back(st[cn]);--cn;
quu.push_back(tmp);
}
}
else st[++cn]=pp{qq,qu[qq][i]},low[qq]=min(low[qq],dfn[qu[qq][i].q]);
}
}
}
queue<long long> qu1;
map<long long,long long> ve[1000001];
int main()
{
scanf("%lld",&T);
for(int ii=1;ii<=T;ii++)
{
scanf("%lld%lld",&a,&b);
for(int i=1;i<=a;i++) qu[i].clear();cnt=cn=0;
for(int i=1;i<=b;i++)
{
scanf("%lld%lld%lld",&q,&w,&e);
if(q>w) swap(q,w);
m[i]=p{q,w,(1<<(e-1))};
}
sort(m+1,m+b+1,cmp);
long long nn=0;
for(int i=1;i<=b;i++)
{
if(m[i].q!=m[i-1].q||m[i].w!=m[i-1].w||m[i].e!=m[i-1].e) m[++nn]=m[i];
}b=nn;
for(int i=1;i<=b;i++)
{
add1(m[i].q,m[i].w,m[i].e,i);add1(m[i].w,m[i].q,m[i].e,i);
}
for(int i=1;i<=a;i++) dfn[i]=low[i]=0;cn=0;quu.clear();
for(int i=1;i<=a;i++) if(!dfn[i]) dfs(i,0);
bool fl1=0;
for(int i=0;i<quu.size();i++)
{
o=0;for(int j=0;j<quu[i].size();j++) qu[quu[i][j].q].clear(),qu[quu[i][j].w.q].clear();
nn=0;long long lm=0;
for(int j=0;j<quu[i].size();j++) m[++nn]=p{quu[i][j].q,quu[i][j].w.q,quu[i][j].w.w};
sort(m+1,m+nn+1,cmp);
for(int j=1;j<=nn;j++)
{
if(m[j].q!=m[j-1].q||m[j].w!=m[j-1].w||m[j].e!=m[j-1].e) m[++lm]=m[j];
}nn=lm;
for(int j=1;j<=nn;j++) de[m[j].q]=de[m[j].w]=0;
for(int j=1;j<=nn;j++) add1(m[j].q,m[j].w,m[j].e,j),add1(m[j].w,m[j].q,m[j].e,j),de[m[j].q]++,de[m[j].w]++,vi[j]=0;
long long rt=quu[i][0].q,fl=1;
for(int j=1;j<=nn;j++) if(de[m[j].q]==1||de[m[j].w]==1) fl=0;
if(!fl) continue;cnn=0;
for(int j=1;j<=nn;j++) stt[++cnn]=m[j].q,stt[++cnn]=m[j].w;
sort(stt+1,stt+cnn+1);cnn=unique(stt+1,stt+cnn+1)-stt-1;
while(!qu1.empty()) qu1.pop();
for(int j=1;j<=cnn;j++) ve[stt[j]].clear();
for(int j=1;j<=cnn;j++) if(de[stt[j]]==2) qu1.push(stt[j]);
bool fll=0;
while(!qu1.empty())
{
long long r=qu1.front();qu1.pop();
p w1,w2;w1.q=0,w2.q=0;
for(int j=0;j<qu[r].size();j++)
{
if(!vi[qu[r][j].e])
{
vi[qu[r][j].e]=1;
if(!w1.q) w1=qu[r][j];
else if(!w2.q) w2=qu[r][j];
de[r]--,de[qu[r][j].q]--;
}
}
if(!w2.q) continue;
w1.w|=w2.w;
if((ve[w1.q][w2.q]|w1.w)==7)
{
fll=1;break;
}
de[w1.q]--,de[w2.q]--;
if(ve[w1.q][w2.q]!=w1.w)
{
de[w1.q]++,de[w2.q]++;
ve[w1.q][w2.q]|=w1.w;
++nn;vi[nn]=0;
qu[w1.q].push_back(p{w2.q,w1.w,nn});
qu[w2.q].push_back(p{w1.q,w1.w,nn});
}
}
if(fll)
{
fl1=1;break;
}
}
if(fl1) printf("Yes\n");
else printf("No\n");
}
return 0;
}
Details
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Test #1:
score: 100
Accepted
time: 9ms
memory: 92884kb
input:
2 3 3 1 2 3 2 3 1 1 3 2 5 6 1 2 1 2 3 1 1 3 2 3 4 3 3 5 3 4 5 3
output:
Yes No
result:
ok 2 token(s): yes count is 1, no count is 1
Test #2:
score: -100
Wrong Answer
time: 238ms
memory: 91396kb
input:
100000 7 10 7 2 2 6 4 2 6 1 2 7 1 3 3 4 1 6 7 1 2 6 3 3 1 2 5 3 1 2 1 1 7 10 5 7 3 7 1 1 4 6 3 6 3 1 3 4 3 4 2 2 3 2 3 1 3 3 3 7 1 1 4 2 7 10 5 6 3 3 5 2 7 2 3 7 3 3 1 2 2 4 3 2 7 4 2 6 1 2 2 6 1 7 5 2 7 10 7 1 3 7 5 3 6 4 1 7 6 1 1 4 1 3 4 2 2 7 2 1 3 1 3 5 3 5 1 3 7 10 6 7 2 3 4 3 1 4 2 5 3 2 7 4 ...
output:
No Yes No No No No Yes No No No Yes Yes No No Yes No No Yes No Yes Yes No No No No No No No No No Yes No No No No Yes Yes No Yes No No No No No No No No No No No No No No Yes Yes No No No Yes Yes No No No No Yes No Yes No No Yes Yes Yes No No No No No No Yes No No No Yes No No No No Yes No No No No ...
result:
wrong answer expected YES, found NO [1st token]