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QOJ
ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
---|---|---|---|---|---|---|---|---|---|
#811956 | #9810. Obliviate, Then Reincarnate | 275307894a# | WA | 0ms | 22348kb | C++14 | 2.2kb | 2024-12-13 09:46:53 | 2024-12-13 09:46:53 |
Judging History
answer
#include<bits/stdc++.h>
#define Gc() getchar()
#define Me(x,y) memset(x,y,sizeof(x))
#define Mc(x,y) memcpy(x,y,sizeof(x))
#define d(x,y) ((m)*(x-1)+(y))
#define R(n) (rnd()%(n)+1)
#define Pc(x) putchar(x)
#define LB lower_bound
#define UB upper_bound
#define fi first
#define se second
#define eb emplace_back
#define all(x) x.begin(),x.end()
using namespace std;using ll=long long;using db=double;using lb=long db;using ui=unsigned;using ull=unsigned long long;using pii=pair<int,int>;
const int N=5e5+5,M=N*4+5,K=1000+5,mod=998244353,Mod=mod-1;const db eps=1e-9;const int INF=1e9+7;mt19937 rnd(28382);
#define Tp template<typename T>
#define Ts template<typename T,typename... Ar>
namespace Debug{
Tp void _debug(char* f,T t){cerr<<f<<'='<<t<<endl;}
Ts void _debug(char* f,T x,Ar... y){while(*f!=',') cerr<<*f++;cerr<<'='<<x<<",";_debug(f+1,y...);}
#ifdef LOCAL
#define gdb(...) _debug((char*)#__VA_ARGS__,__VA_ARGS__)
#else
#define gdb(...) void()
#endif
}using namespace Debug;
int n,m,q,scc[N],k;
vector<pii> S[N];
namespace Tarjan{
int dfn[N],low[N],dh,st[N],sh;
void Tarjan(int x){
dfn[x]=low[x]=++dh;st[++sh]=x;
for(auto [i,w]:S[x]){
if(!dfn[i]) Tarjan(i),low[x]=min(low[x],low[i]);
else if(!scc[i]) low[x]=min(low[x],dfn[i]);
}
if(low[x]==dfn[x]){
++k;while(st[sh+1]^x) scc[st[sh--]]=k;
}
}
void build(){
for(int i=1;i<=n;i++) if(!dfn[i]) Tarjan(i);
}
}
int vis[N];
ll w[N];
int su[N];
void dfs(int x,ll d){
if(vis[x]){
if(d^w[x]) su[scc[x]]=1;
return;
}
vis[x]=1;w[x]=d;
for(auto [i,w]:S[x]) if(scc[x]==scc[i]) dfs(i,d+w);
}
int getans(int x){
if(su[scc[x]]) return su[scc[x]];
if(vis[x]) return 0;
vis[x]=1;
for(auto [i,w]:S[x]) if(getans(i)) return su[scc[x]]=1;
return 0;
}
void Solve(){
scanf("%d%d%d",&n,&m,&q);
for(int i=1;i<=m;i++){
int a,b;scanf("%d%d",&a,&b);
S[(a%n+n)%n].emplace_back(((a+b)%n+n)%n,b);
}
Tarjan::build();
gdb(1);
for(int i=1;i<=n;i++) if(!vis[i]) dfs(i,0);
Me(vis,0);
for(int i=1;i<=n;i++) getans(i);
while(q--){
int x;scanf("%d",&x);
x=(x%n+n)%n;
puts(su[scc[x]]?"Yes":"No");
}
}
int main(){
int t=1;
// scanf("%d",&t);
while(t--) Solve();
cerr<<clock()*1.0/CLOCKS_PER_SEC<<'\n';
}
Details
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Test #1:
score: 100
Accepted
time: 0ms
memory: 22180kb
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: 22312kb
input:
3 2 3 1 1 -1 0 1 2 3
output:
No No No
result:
ok 3 tokens
Test #3:
score: -100
Wrong Answer
time: 0ms
memory: 22348kb
input:
1 1 1 0 1000000000 -1000000000
output:
No
result:
wrong answer 1st words differ - expected: 'Yes', found: 'No'