QOJ.ac
QOJ
ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
---|---|---|---|---|---|---|---|---|---|
#698225 | #8140. Customs Controls 2 | lichenyu_ac | RE | 4ms | 9972kb | C++14 | 1.6kb | 2024-11-01 18:15:47 | 2024-11-01 18:15:51 |
Judging History
answer
#include<bits/stdc++.h>
using namespace std;
const int N=2e5+10,M=N*2;
int head[N],ver[M],nxt[M],tot=1;
void add(int x,int y){
ver[++tot]=y,nxt[tot]=head[x],head[x]=tot;
}
int n,m;
int deg[N],val[N];
struct DSU{
int fa[N];
void init(){
for(int i=1;i<=n*2;i++)fa[i]=i;
}
int find(int x){
return fa[x]==x?x:fa[x]=find(fa[x]);
}
}DSU;
void clear(){
for(int i=1;i<=n*2;i++)
head[i]=deg[i]=0;
tot=1;
}
void topsort(){
queue<int>q;
for(int i=1;i<=n*2;i++)
if(!deg[i])q.emplace(i),val[i]=1;
else val[i]=0;
while(q.size()){
int x=q.front();q.pop();
for(int i=head[x];i;i=nxt[i]){
int y=ver[i];
val[y]=max(val[y],val[x]+1);
if(--deg[y]==0)q.emplace(y);
}
}
}
void solve(){
scanf("%d%d",&n,&m);
DSU.init(),clear();
for(int i=1;i<=m;i++){
int x,y;scanf("%d%d",&x,&y);
int fx=DSU.find(x+n),fy=DSU.find(y);
if(fx!=fy)DSU.fa[fx]=fy;
}
for(int i=1;i<=n;i++){
if(DSU.find(i)==DSU.find(i+n))
return puts("No"),void();
}
for(int i=1;i<=n;i++){
int x=DSU.find(i),y=DSU.find(i+n);
add(y,x),deg[x]++;
}
topsort();
for(int i=1;i<=n*2;i++){
if(deg[i])return puts("No"),void();
}
puts("Yes");
for(int i=1;i<=n;i++){
int x=DSU.find(i),y=DSU.find(i+n);
printf("%d%c",val[x]-val[y]," \n"[i==n]);
}
}
int main(){
int T;scanf("%d",&T);
while(T--)solve();
return 0;
}
Details
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Test #1:
score: 100
Accepted
time: 0ms
memory: 7880kb
input:
2 3 3 1 2 1 3 2 3 8 9 1 2 1 3 1 4 2 5 3 6 4 7 5 8 6 8 7 8
output:
No Yes 1 1 1 1 1 1 1 1
result:
ok ok (2 test cases)
Test #2:
score: 0
Accepted
time: 1ms
memory: 7896kb
input:
2 11 16 1 2 1 3 1 4 1 5 2 6 4 6 3 7 4 7 5 8 6 8 2 9 3 9 7 10 8 10 9 11 10 11 8 10 1 2 1 3 2 4 3 5 3 6 4 6 2 7 5 7 6 8 7 8
output:
Yes 1 1 1 1 2 1 2 1 3 1 1 No
result:
ok ok (2 test cases)
Test #3:
score: 0
Accepted
time: 1ms
memory: 7800kb
input:
1 8 10 1 2 1 3 2 4 3 5 3 6 4 6 2 7 5 7 6 8 7 8
output:
No
result:
ok ok (1 test case)
Test #4:
score: 0
Accepted
time: 1ms
memory: 7956kb
input:
1 11 16 1 2 1 3 1 4 1 5 2 6 4 6 3 7 4 7 5 8 6 8 2 9 3 9 7 10 8 10 9 11 10 11
output:
Yes 1 1 1 1 2 1 2 1 3 1 1
result:
ok ok (1 test case)
Test #5:
score: 0
Accepted
time: 1ms
memory: 6044kb
input:
1 3 3 1 2 1 3 2 3
output:
No
result:
ok ok (1 test case)
Test #6:
score: 0
Accepted
time: 1ms
memory: 9972kb
input:
1 15 24 1 3 1 7 1 6 1 12 3 11 3 5 3 13 3 14 3 8 7 11 7 13 7 14 11 2 11 10 6 9 5 9 13 9 14 4 8 4 2 4 10 4 9 4 12 15 4 15
output:
Yes 1 1 1 1 1 2 1 2 1 1 1 4 1 2 1
result:
ok ok (1 test case)
Test #7:
score: 0
Accepted
time: 1ms
memory: 7932kb
input:
10 20 40 1 8 1 11 1 19 8 7 8 16 8 15 8 14 8 4 8 17 11 5 11 6 11 2 11 3 7 6 7 2 7 3 16 9 16 12 15 9 15 12 14 9 4 18 4 10 5 13 5 10 6 18 6 10 2 13 2 18 3 18 3 10 9 13 9 10 12 13 12 10 19 20 17 20 13 20 18 20 10 20 20 30 8 19 19 12 5 12 5 10 10 4 18 4 18 14 14 6 15 6 15 7 7 3 17 3 17 2 2 16 9 16 9 11 1...
output:
Yes 1 1 1 2 1 1 1 1 1 1 2 1 1 1 1 1 3 1 4 1 No Yes 1 1 1 4 4 1 2 1 2 2 3 3 4 2 2 1 1 1 1 1 Yes 1 3 4 4 3 1 2 5 3 1 1 1 2 1 1 1 2 1 2 1 Yes 1 3 1 1 1 1 3 1 1 1 3 1 1 2 2 3 1 1 1 1 Yes 1 1 1 1 3 1 1 1 1 2 1 1 3 4 1 3 2 1 1 1 Yes 1 2 1 1 2 2 1 1 2 3 2 1 1 3 1 2 5 1 1 1 No Yes 1 1 3 1 3 2 2 1 1 1 3 2 3 ...
result:
ok ok (10 test cases)
Test #8:
score: 0
Accepted
time: 4ms
memory: 7992kb
input:
10 1919 3195 1888 1186 1186 519 1514 519 1514 859 859 1634 977 1634 977 185 185 1250 1103 1250 1103 463 463 1683 426 1683 426 1728 1728 1402 1612 1402 1612 1789 1789 857 586 857 586 1669 1669 1376 1833 1376 1833 1076 1076 749 733 749 733 551 551 217 1717 217 1717 862 862 319 96 319 96 479 479 1381 1...
output:
No Yes 1 26 1 11 13 4 18 15 15 18 30 5 23 3 12 7 1 24 18 19 34 13 14 7 1 1 1 23 5 14 2 7 29 1 6 28 20 18 20 20 1 25 7 23 21 12 24 3 11 12 7 1 40 8 3 31 1 19 12 10 10 15 17 16 5 36 11 1 13 18 13 3 18 4 36 34 35 37 8 27 13 33 5 29 13 9 28 23 33 7 9 13 21 3 7 10 11 8 6 1 6 12 36 7 16 13 8 2 1 34 12 8 2...
result:
ok ok (10 test cases)
Test #9:
score: -100
Runtime Error
input:
1 181547 488264 1 172537 1 90998 1 88110 1 96832 1 114889 1 33910 1 88129 1 70671 1 63339 1 48928 1 87572 1 34438 1 159256 1 173984 1 91374 1 89583 1 47960 1 93777 1 44079 1 132241 1 85083 1 99617 1 160839 1 157126 1 178514 1 70706 1 13530 1 168869 1 29354 1 11630 1 123518 1 86921 1 19627 1 126118 1...