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QOJ
ID | 题目 | 提交者 | 结果 | 用时 | 内存 | 语言 | 文件大小 | 提交时间 | 测评时间 |
---|---|---|---|---|---|---|---|---|---|
#788709 | #9810. Obliviate, Then Reincarnate | Maxduan | WA | 595ms | 28812kb | C++20 | 2.1kb | 2024-11-27 17:59:33 | 2024-11-27 17:59:34 |
Judging History
answer
#include <bits/stdc++.h>
using namespace std;
#define maxn 500005
#define pii pair<int,int>
#define ll long long
vector<pii>g[maxn],g2[maxn];
stack<int>st;
int dn,dfn[maxn],low[maxn];
int scc[maxn],cnt;
bool instk[maxn];
bool ok[maxn];
bool vis[maxn];
void tarjan(int k)
{
dfn[k]=low[k]=++dn;
st.push(k),instk[k]=1;
for(auto [len,x]:g[k])
{
if(!dfn[x])
{
tarjan(x);
low[k]=min(low[k],low[x]);
}
else if(dfn[x]&&instk[x]) low[k]=min(low[k],dfn[x]);
}
if(dfn[k]==low[k])
{
cnt++;
while(1)
{
int temp=st.top();
st.pop();
instk[temp]=0;
scc[temp]=cnt;
if(temp==k)break;
}
}
}
ll dp[maxn],nows;
void dfs1(int u){
vis[u]=1;
for(auto [w,v]:g[u]){
if(scc[v]!=nows)continue;
if(vis[v]){
if(dp[v]!=dp[u]+w){
ok[nows]=1;
}
}
else{
dp[v]=dp[u]+w;
dfs1(v);
}
}
}
void dfs2(int u){
vis[u]=1;
for(auto [w,v]:g2[u]){
if(!vis[v])dfs2(v);
if(ok[v])ok[u]=1;
}
}
signed main(){
int n,m,q;cin>>n>>m>>q;
for(int i=1;i<=m;i++){
int a,b;cin>>a>>b;
a=(a%n+n)%n;
int nxt=(a+b)%n;
g[a].push_back({b,nxt});
}
for(int i=0;i<n;i++){
if(!dfn[i]) tarjan(i);
}
for(int i=0;i<n;i++){
for(auto [w,v]:g[i]){
if(scc[i]==scc[v])continue;
g2[scc[i]].push_back({w,scc[v]});
}
}
for(int i=0;i<n;i++){
if(vis[i])continue;
//cerr<<"i scc="<<i<<' '<<scc[i]<<'\n';
nows=scc[i];
dfs1(i);
}
for(int i=1;i<=cnt;i++){
vis[i]=0;
}
for(int i=1;i<=cnt;i++){
if(!vis[i])dfs2(i);
}
for(int i=1;i<=q;i++){
int x;cin>>x;
x=(x%n+n)%n;
if(ok[scc[x]]){
cout<<"Yes\n";
}
else cout<<"No\n";
}
}
详细
Test #1:
score: 100
Accepted
time: 2ms
memory: 9756kb
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: 0ms
memory: 9928kb
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: 2ms
memory: 9752kb
input:
1 1 1 0 1000000000 -1000000000
output:
Yes
result:
ok "Yes"
Test #4:
score: 0
Accepted
time: 0ms
memory: 9664kb
input:
3 2 3 0 1000000000 1 -1000000000 -1000000000 0 -1000000000
output:
No No No
result:
ok 3 tokens
Test #5:
score: 0
Accepted
time: 595ms
memory: 25348kb
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:
No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No ...
result:
ok 500000 tokens
Test #6:
score: -100
Wrong Answer
time: 524ms
memory: 28812kb
input:
100848 500000 500000 720352587 361776806 231853504 -933882325 960971230 -83519300 -152772415 -631132247 842871215 -666621297 857194330 -754943024 -698506963 -705416545 -3551931 -927937446 628710320 -942247987 674921043 847145884 -325629529 475694308 -339363446 686789318 236702996 654762989 420412365...
output:
Yes Yes Yes Yes Yes Yes Yes No Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes No No Yes Yes Yes Yes Yes Yes Yes No Yes No Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes No Yes Yes No Yes Yes Yes Yes Yes Yes No Yes Yes No Yes Yes Yes Yes Yes Yes Yes Yes Yes No Yes Yes Yes Yes Yes Yes Yes Ye...
result:
wrong answer 8th words differ - expected: 'Yes', found: 'No'