#include <bits/stdc++.h>
using namespace std;
#define pb push_back
#define mp make_pair
const int MOD=1e9+7;
int n,k;
vector<int> adj[300001],rev[300001];
int l[300001],r[300001];
//leftmost special guy node i can reach
//rightmost special guy who can reach node i
//cycle iff exists l[i]<=r[i]
void init(int N,int K){
n=N;
k=K;
for (int i=1;i<k;i++){
l[i]=i+1;
adj[i].pb(i+1);
rev[i+1].pb(i);
r[i]=i;
}
l[k]=n+1;
r[k]=k;
for (int i=k+1;i<=n;i++){
l[i]=n+1;
r[i]=0;
}
}
bool vis[300001];
void dfs0(int x,int val){
if (vis[x]) return;
vis[x]=true;
l[x]=min(l[x],val);
for (auto i:rev[x]) dfs0(i,val);
}
void dfs1(int x,int val){
if (vis[x]) return;
vis[x]=true;
r[x]=max(r[x],val);
for (auto i:adj[x]) dfs1(i,val);
}
int add_teleporter(int u,int v){
u++;
v++;
adj[u].pb(v);
rev[v].pb(u);
if (u==v) return 1;
if (l[u]>l[v]){
for (int i=1;i<=n;i++) vis[i]=false;
dfs0(u,l[v]);
for (int i=1;i<=n;i++){
if (l[i]<=r[i]) return 1;
}
}
if (r[u]>r[v]){
for (int i=1;i<=n;i++) vis[i]=false;
dfs1(v,r[u]);
for (int i=1;i<=n;i++){
if (l[i]<=r[i]) return 1;
}
}
return 0;
}
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
8 ms |
14288 KB |
Output is correct |
2 |
Correct |
8 ms |
14288 KB |
Output is correct |
3 |
Correct |
9 ms |
14424 KB |
Output is correct |
4 |
Correct |
8 ms |
14324 KB |
Output is correct |
5 |
Correct |
8 ms |
14404 KB |
Output is correct |
6 |
Correct |
8 ms |
14416 KB |
Output is correct |
7 |
Correct |
8 ms |
14416 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
8 ms |
14288 KB |
Output is correct |
2 |
Correct |
8 ms |
14288 KB |
Output is correct |
3 |
Correct |
9 ms |
14424 KB |
Output is correct |
4 |
Correct |
8 ms |
14324 KB |
Output is correct |
5 |
Correct |
8 ms |
14404 KB |
Output is correct |
6 |
Correct |
8 ms |
14416 KB |
Output is correct |
7 |
Correct |
8 ms |
14416 KB |
Output is correct |
8 |
Correct |
9 ms |
14352 KB |
Output is correct |
9 |
Correct |
8 ms |
14376 KB |
Output is correct |
10 |
Correct |
7 ms |
14288 KB |
Output is correct |
11 |
Correct |
8 ms |
14288 KB |
Output is correct |
12 |
Correct |
8 ms |
14288 KB |
Output is correct |
13 |
Incorrect |
8 ms |
14416 KB |
Wrong Answer[1] |
14 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
8 ms |
14288 KB |
Output is correct |
2 |
Correct |
8 ms |
14288 KB |
Output is correct |
3 |
Correct |
9 ms |
14424 KB |
Output is correct |
4 |
Correct |
8 ms |
14324 KB |
Output is correct |
5 |
Correct |
8 ms |
14404 KB |
Output is correct |
6 |
Correct |
8 ms |
14416 KB |
Output is correct |
7 |
Correct |
8 ms |
14416 KB |
Output is correct |
8 |
Correct |
9 ms |
14352 KB |
Output is correct |
9 |
Correct |
8 ms |
14376 KB |
Output is correct |
10 |
Correct |
7 ms |
14288 KB |
Output is correct |
11 |
Correct |
8 ms |
14288 KB |
Output is correct |
12 |
Correct |
8 ms |
14288 KB |
Output is correct |
13 |
Incorrect |
8 ms |
14416 KB |
Wrong Answer[1] |
14 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
8 ms |
14288 KB |
Output is correct |
2 |
Correct |
8 ms |
14288 KB |
Output is correct |
3 |
Correct |
9 ms |
14424 KB |
Output is correct |
4 |
Correct |
8 ms |
14324 KB |
Output is correct |
5 |
Correct |
8 ms |
14404 KB |
Output is correct |
6 |
Correct |
8 ms |
14416 KB |
Output is correct |
7 |
Correct |
8 ms |
14416 KB |
Output is correct |
8 |
Correct |
9 ms |
14352 KB |
Output is correct |
9 |
Correct |
8 ms |
14376 KB |
Output is correct |
10 |
Correct |
7 ms |
14288 KB |
Output is correct |
11 |
Correct |
8 ms |
14288 KB |
Output is correct |
12 |
Correct |
8 ms |
14288 KB |
Output is correct |
13 |
Incorrect |
8 ms |
14416 KB |
Wrong Answer[1] |
14 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
8 ms |
14288 KB |
Output is correct |
2 |
Correct |
8 ms |
14288 KB |
Output is correct |
3 |
Correct |
9 ms |
14424 KB |
Output is correct |
4 |
Correct |
8 ms |
14324 KB |
Output is correct |
5 |
Correct |
8 ms |
14404 KB |
Output is correct |
6 |
Correct |
8 ms |
14416 KB |
Output is correct |
7 |
Correct |
8 ms |
14416 KB |
Output is correct |
8 |
Correct |
9 ms |
14352 KB |
Output is correct |
9 |
Correct |
8 ms |
14376 KB |
Output is correct |
10 |
Correct |
7 ms |
14288 KB |
Output is correct |
11 |
Correct |
8 ms |
14288 KB |
Output is correct |
12 |
Correct |
8 ms |
14288 KB |
Output is correct |
13 |
Incorrect |
8 ms |
14416 KB |
Wrong Answer[1] |
14 |
Halted |
0 ms |
0 KB |
- |