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QOJ
ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
---|---|---|---|---|---|---|---|---|---|
#783081 | #9810. Obliviate, Then Reincarnate | FHQY# | WA | 177ms | 98660kb | C++17 | 2.7kb | 2024-11-25 23:13:19 | 2024-11-25 23:13:20 |
Judging History
This is the latest submission verdict.
- [2024-11-26 23:19:26]
- hack成功,自动添加数据
- (/hack/1260)
- [2024-11-25 23:13:19]
- Submitted
answer
#include<bits/stdc++.h>
#define int long long
#define ll long long
#define endl '\n'
#define fi first
#define se second
#define pii pair<int,int>
using namespace std;
const int N=5e5+5;
int n;
int vis[N],dfn[N],low[N],sk[N],top,num,cnt,col[N];
int viss[N],dis[N],cntt[N];
int in[N],out[N];
bool vs[N],fl[N];
vector<int>e[N],scc[N];
vector<pii>G[N],g[N];
void tarjan(int u){
vis[sk[++top]=u]=1;
dfn[u]=low[u]=++num;
for(auto to:G[u]){
int v=to.fi;
if(!dfn[v]){
tarjan(v);
low[u]=min(low[u],low[v]);
}else if(vis[v])
low[u]=min(low[u],dfn[v]);
}
if(dfn[u]==low[u]){
int v;cnt++;
do{
v=sk[top--];
vis[v]=0;
col[v]=cnt;
}while(u!=v);
}
}
bool spfa(int x,int op,vector<int> p){
int inf=1e18;
for(auto now : p)
{
viss[now]=0,dis[now]=inf*op;
}
dis[x]=0,cntt[x]=0;
queue<int> q;
q.push(x);
while(!q.empty())
{
int now = q.front();
q.pop();
viss[now]=0;
for(int i=0;i<g[now].size();i++)
{
pair<int,int> s=g[now][i];
if(col[s.first]!=col[x])continue;
// cout<<now<<' '<<s.first<<" ff"<<endl;
if(dis[s.first]>dis[now]+s.second*op)
{
dis[s.first]=dis[now]+s.second*op;
cntt[s.first]=cntt[now]+1;
if(cntt[now]>=g[now].size()*2) return true;
if(!viss[s.first]) viss[s.first]=1,q.push(s.first);
}
}
}
return false;
}
void solve(){
cin>>n;
int m,Q;
cin>>m>>Q;
for(int i=1;i<=m;i++)
{
int a,b;
cin>>a>>b;
if(b==0)
continue;
a=(a%n+n)%n;
G[a+1].push_back({((a+b)%n+n)%n+1,b});
}
for(int i=1;i<=n;i++)
if(!dfn[i])tarjan(i);
for(int i=1;i<=n;i++)
scc[col[i]].push_back(i);
for(int u=1;u<=n;u++){
for(auto to:G[u]){
int v=to.fi;
if(col[u]==col[v])continue;
in[col[u]]++;
out[col[v]]++;
e[col[v]].push_back(col[u]);
}
}
for(int u=1;u<=n;u++){
for(auto to:G[u]){
int v=to.fi;
if(col[u]!=col[v])continue;
g[u].push_back({v,to.se});
}
}
// for(int i=1;i<=cnt;i++){
// cout<<"# ";
// for(auto v:scc[i])
// cout<<v<<' ';
// cout<<endl;
// }
for(int i=1;i<=n;i++){
int cl=col[i];
if(vs[cl])continue;
vs[cl]=1;
fl[cl]=spfa(i,1,scc[cl])|spfa(i,-1,scc[cl]);
// cout<<i<<' '<<cl<<' '<<fl[cl]<<endl;
}
//cout<<"DEBUG"<<endl;
queue<int>q;
for(int i=1;i<=cnt;i++)
if(!in[i])q.push(i);
while(q.size()){
int u=q.front();q.pop();
for(auto v:e[u]){
fl[v]|=fl[u];
if(!--in[v])q.push(v);
}
}
while(Q--){
int x;
cin>>x;
x=(x%n+n)%n+1;
if(fl[col[x]])cout<<"Yes"<<endl;
else cout<<"No"<<endl;
}
return ;
}
int T=1;
signed main(){
ios::sync_with_stdio(false);
cin.tie(0);
cout.tie(0);
// cin>>T;
for(int kase=1;kase<=T;kase++){
solve();
}
return 0;
}
Details
Tip: Click on the bar to expand more detailed information
Test #1:
score: 100
Accepted
time: 13ms
memory: 66164kb
input:
3 2 3 1 1 -1 3 1 2 3
output:
Yes Yes No
result:
ok 3 tokens
Test #2:
score: 0
Accepted
time: 3ms
memory: 67028kb
input:
3 2 3 1 1 -1 0 1 2 3
output:
No No No
result:
ok 3 tokens
Test #3:
score: 0
Accepted
time: 8ms
memory: 63532kb
input:
1 1 1 0 1000000000 -1000000000
output:
Yes
result:
ok "Yes"
Test #4:
score: 0
Accepted
time: 4ms
memory: 63512kb
input:
3 2 3 0 1000000000 1 -1000000000 -1000000000 0 -1000000000
output:
No No No
result:
ok 3 tokens
Test #5:
score: -100
Wrong Answer
time: 177ms
memory: 98660kb
input:
50134 500000 500000 -154428638 -283522863 -186373509 -327130969 154999046 46750274 -933523447 349415487 -437683609 140099255 864996699 -262318199 811293034 -264299324 120273173 52410685 874944410 -52048424 445049930 -803690605 -138111276 -104634331 720288580 126597671 471164416 -348777147 -356502322...
output:
Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes ...
result:
wrong answer 1st words differ - expected: 'No', found: 'Yes'