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QOJ
ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
---|---|---|---|---|---|---|---|---|---|
#79790 | #4892. 序列 | Larunatrecy | 0 | 25ms | 57996kb | C++14 | 2.9kb | 2023-02-20 21:42:02 | 2023-02-20 21:42:06 |
Judging History
answer
#pragma GCC optimize(2)
#include<bits/stdc++.h>
using namespace std;
const int N = 2e6+7;
int n,m;
struct edge
{
int y,next;
}e[2*N];
int link[N],t=0;
void add(int x,int y)
{
e[++t].y=y;
e[t].next=link[x];
link[x]=t;
}
vector<int> num[N];
int siz[N],tot=0;
inline int Big(int x,int i){return siz[x-1]+i+1;}
inline int Les(int x,int i){return siz[x-1]+i+1+tot;}
int A[N],B[N],C[N],D[N],cnt[N];
int dfn[N],low[N],tim=0;
int scc=0,col[N];
bool ins[N];
stack<int> stk;
void tarjan(int x)
{
dfn[x]=low[x]=++tim;
ins[x]=1;stk.push(x);
for(int i=link[x];i;i=e[i].next)
{
int y=e[i].y;
if(!dfn[y])
{
tarjan(y);
low[x]=min(low[x],low[y]);
}
else if(ins[y])low[x]=min(low[x],dfn[y]);
}
if(dfn[x]==low[x])
{
++scc;
int y;
do
{
y=stk.top();
stk.pop();
col[y]=scc;
ins[y]=0;
}while(x!=y);
}
}
int main()
{
cin>>n>>m;
for(int i=1;i<=m;i++)
{
int x,y,z,t;
scanf("%d %d %d %d",&x,&y,&z,&t);
num[x].push_back(t);
num[y].push_back(t);
num[z].push_back(t);
A[i]=x;B[i]=y;C[i]=z;D[i]=t;
}
for(int i=1;i<=n;i++)
{
sort(num[i].begin(),num[i].end());
unique(num[i].begin(),num[i].end())-num[i].begin();
cnt[i]=num[i].size();
siz[i]=siz[i-1]+cnt[i];
}
tot=siz[n];
for(int i=1;i<=n;i++)
{
for(int j=0;j+1<cnt[i];j++)
{
add(Les(i,j),Les(i,j+1));
add(Big(i,j+1),Big(i,j));
}
}
for(int i=1;i<=m;i++)
{
int x=A[i],y=B[i],z=C[i],t=D[i];
int a=lower_bound(num[x].begin(),num[x].end(),t)-num[x].begin();
int b=lower_bound(num[x].begin(),num[x].end(),t)-num[x].begin();
int c=lower_bound(num[x].begin(),num[x].end(),t)-num[x].begin();
add(Les(x,a),Big(y,b));add(Les(x,a),Big(z,c));
add(Les(y,b),Big(x,a));add(Les(y,b),Big(z,c));
add(Les(z,c),Big(x,a));add(Les(z,c),Big(y,b));
if(a+1<cnt[x])a++;else a=-1;
if(b+1<cnt[y])b++;else b=-1;
if(c+1<cnt[z])c++;else c=-1;
if(a!=-1&&b!=-1)add(Big(x,a),Les(y,b));if(a!=-1&&c!=-1)add(Big(x,a),Les(z,c));
if(a!=-1&&b!=-1)add(Big(y,b),Les(x,a));if(b!=-1&&c!=-1)add(Big(y,b),Les(z,c));
if(a!=-1&&c!=-1)add(Big(z,c),Les(x,a));if(b!=-1&&c!=-1)add(Big(z,c),Les(y,b));
}
for(int i=1;i<=2*tot;i++)if(!dfn[i])tarjan(i);
for(int i=1;i<=n;i++)
for(int j=0;j<cnt[i];j++)
if(col[Big(i,j)]==col[Les(i,j)])
{
printf("NO\n");
return 0;
}
printf("YES\n");
for(int i=1;i<=n;i++)
{
int w=1;
for(int j=0;j<cnt[i];j++)if(col[Big(i,j)]<col[Les(i,j)])w=num[i][j];
printf("%d ",w);
}
return 0;
}
Details
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Subtask #1:
score: 0
Wrong Answer
Test #1:
score: 0
Wrong Answer
time: 8ms
memory: 51036kb
input:
10 10 6 3 10 133562624 8 7 6 685486592 4 2 7 332482851 10 8 9 211550017 2 10 1 165556251 10 8 5 211550017 6 8 2 332482851 4 9 2 332482851 8 1 4 193658790 9 6 10 728674154
output:
NO
result:
wrong answer verdict is not correct
Subtask #2:
score: 0
Wrong Answer
Test #9:
score: 0
Wrong Answer
time: 25ms
memory: 57996kb
input:
40 9880 4 19 31 610502845 10 19 33 190412843 21 24 39 649028784 16 22 40 569593239 5 9 37 550862419 11 23 40 654613112 6 18 23 492267246 22 23 30 538715841 6 16 24 407919735 5 16 18 388907784 2 16 18 388907784 21 24 28 281403057 7 12 27 451830401 3 11 16 508407438 15 33 36 561955959 6 23 29 70605893...
output:
NO
result:
wrong answer verdict is not correct
Subtask #3:
score: 0
Skipped
Dependency #1:
0%
Subtask #4:
score: 0
Skipped
Dependency #2:
0%