#include<bits/stdc++.h>
using namespace std;
int c[500005];
vector<int>key[500005];
int l[500005];
int r[500005];
int have[500005];
void solve(int st,int en){
int m=(st+en)/2;
if(st==en)return l[m]=m,r[m]=m,void();
vector<pair<int,int>>ll,lr,rl,rr;
solve(st,m);
solve(m+1,en);
int curr=m,curl=m+1;
vector<int>del;
for(int i=m;i>=st;i--){
if(r[i]<m)continue;
while(curl>st&&curl>l[i]){
curl--;
for(auto a:key[curl])if(!(have[a]++))del.push_back(a);
}
while(1){
int check=0;
while(curr<en&&have[c[curr]]){
curr++;
for(auto a:key[curr])if(!(have[a]++))del.push_back(a);
check=1;
}
while(curl>st&&have[c[curl-1]]){
curl--;
for(auto a:key[curl])if(!(have[a]++))del.push_back(a);
check=1;
}
if(!check)break;
}
r[i]=curr;
l[i]=curl;
}
for(auto x:del)have[x]=0;
del.clear();
curr=m,curl=m+1;
for(int i=m+1;i<=en;i++){
if(l[i]>m+1)continue;
while(curr<en&&curr<r[i]){
curr++;
for(auto a:key[curr])if(!(have[a]++))del.push_back(a);
}
while(1){
int check=0;
while(curr<en&&have[c[curr]]){
curr++;
for(auto a:key[curr])if(!(have[a]++))del.push_back(a);
check=1;
}
while(curl>st&&have[c[curl-1]]){
curl--;
for(auto a:key[curl])if(!(have[a]++))del.push_back(a);
check=1;
}
if(!check)break;
}
r[i]=curr;
l[i]=curl;
}
for(auto x:del)have[x]=0;
del.clear();
}
int main(){
ios_base::sync_with_stdio(false);
cin.tie(0);
int n;cin>>n;
for(int i=1;i<n;i++)cin>>c[i];
for(int i=1;i<=n;i++){
int b;cin>>b;
for(int j=0;j<b;j++){
int x;cin>>x;
key[i].push_back(x);
}
}
solve(1,n);
int q;cin>>q;
for(int i=0;i<q;i++){
int x,y;cin>>x>>y;
if(y>=l[x]&&y<=r[x])cout<<"YES\n";
else cout<<"NO\n";
}
}
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
5 ms |
19024 KB |
Output is correct |
2 |
Correct |
6 ms |
19024 KB |
Output is correct |
3 |
Correct |
6 ms |
19048 KB |
Output is correct |
4 |
Correct |
5 ms |
19024 KB |
Output is correct |
5 |
Correct |
5 ms |
18940 KB |
Output is correct |
6 |
Correct |
5 ms |
19024 KB |
Output is correct |
7 |
Correct |
4 ms |
19024 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
5 ms |
19024 KB |
Output is correct |
2 |
Correct |
6 ms |
19024 KB |
Output is correct |
3 |
Correct |
6 ms |
19048 KB |
Output is correct |
4 |
Correct |
5 ms |
19024 KB |
Output is correct |
5 |
Correct |
5 ms |
18940 KB |
Output is correct |
6 |
Correct |
5 ms |
19024 KB |
Output is correct |
7 |
Correct |
4 ms |
19024 KB |
Output is correct |
8 |
Correct |
65 ms |
24812 KB |
Output is correct |
9 |
Correct |
67 ms |
24700 KB |
Output is correct |
10 |
Correct |
70 ms |
24392 KB |
Output is correct |
11 |
Correct |
68 ms |
25416 KB |
Output is correct |
12 |
Correct |
63 ms |
23728 KB |
Output is correct |
13 |
Correct |
63 ms |
24916 KB |
Output is correct |
14 |
Correct |
62 ms |
24904 KB |
Output is correct |
15 |
Correct |
63 ms |
24180 KB |
Output is correct |
16 |
Correct |
58 ms |
23120 KB |
Output is correct |
17 |
Correct |
62 ms |
24904 KB |
Output is correct |
18 |
Correct |
64 ms |
25072 KB |
Output is correct |
19 |
Correct |
64 ms |
25072 KB |
Output is correct |
20 |
Correct |
62 ms |
24904 KB |
Output is correct |
21 |
Correct |
58 ms |
24704 KB |
Output is correct |
22 |
Correct |
59 ms |
24904 KB |
Output is correct |
23 |
Correct |
65 ms |
24836 KB |
Output is correct |
24 |
Correct |
62 ms |
22856 KB |
Output is correct |
25 |
Correct |
63 ms |
24660 KB |
Output is correct |
26 |
Correct |
60 ms |
24648 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
170 ms |
31500 KB |
Output is correct |
2 |
Correct |
162 ms |
30024 KB |
Output is correct |
3 |
Correct |
174 ms |
31048 KB |
Output is correct |
4 |
Correct |
172 ms |
31560 KB |
Output is correct |
5 |
Correct |
159 ms |
31408 KB |
Output is correct |
6 |
Correct |
129 ms |
27208 KB |
Output is correct |
7 |
Correct |
125 ms |
30028 KB |
Output is correct |
8 |
Correct |
119 ms |
30024 KB |
Output is correct |
9 |
Correct |
118 ms |
28744 KB |
Output is correct |
10 |
Correct |
122 ms |
30024 KB |
Output is correct |
11 |
Correct |
120 ms |
30024 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
5 ms |
19024 KB |
Output is correct |
2 |
Correct |
6 ms |
19024 KB |
Output is correct |
3 |
Correct |
6 ms |
19048 KB |
Output is correct |
4 |
Correct |
5 ms |
19024 KB |
Output is correct |
5 |
Correct |
5 ms |
18940 KB |
Output is correct |
6 |
Correct |
5 ms |
19024 KB |
Output is correct |
7 |
Correct |
4 ms |
19024 KB |
Output is correct |
8 |
Correct |
65 ms |
24812 KB |
Output is correct |
9 |
Correct |
67 ms |
24700 KB |
Output is correct |
10 |
Correct |
70 ms |
24392 KB |
Output is correct |
11 |
Correct |
68 ms |
25416 KB |
Output is correct |
12 |
Correct |
63 ms |
23728 KB |
Output is correct |
13 |
Correct |
63 ms |
24916 KB |
Output is correct |
14 |
Correct |
62 ms |
24904 KB |
Output is correct |
15 |
Correct |
63 ms |
24180 KB |
Output is correct |
16 |
Correct |
58 ms |
23120 KB |
Output is correct |
17 |
Correct |
62 ms |
24904 KB |
Output is correct |
18 |
Correct |
64 ms |
25072 KB |
Output is correct |
19 |
Correct |
64 ms |
25072 KB |
Output is correct |
20 |
Correct |
62 ms |
24904 KB |
Output is correct |
21 |
Correct |
58 ms |
24704 KB |
Output is correct |
22 |
Correct |
59 ms |
24904 KB |
Output is correct |
23 |
Correct |
65 ms |
24836 KB |
Output is correct |
24 |
Correct |
62 ms |
22856 KB |
Output is correct |
25 |
Correct |
63 ms |
24660 KB |
Output is correct |
26 |
Correct |
60 ms |
24648 KB |
Output is correct |
27 |
Correct |
170 ms |
31500 KB |
Output is correct |
28 |
Correct |
162 ms |
30024 KB |
Output is correct |
29 |
Correct |
174 ms |
31048 KB |
Output is correct |
30 |
Correct |
172 ms |
31560 KB |
Output is correct |
31 |
Correct |
159 ms |
31408 KB |
Output is correct |
32 |
Correct |
129 ms |
27208 KB |
Output is correct |
33 |
Correct |
125 ms |
30028 KB |
Output is correct |
34 |
Correct |
119 ms |
30024 KB |
Output is correct |
35 |
Correct |
118 ms |
28744 KB |
Output is correct |
36 |
Correct |
122 ms |
30024 KB |
Output is correct |
37 |
Correct |
120 ms |
30024 KB |
Output is correct |
38 |
Correct |
195 ms |
45012 KB |
Output is correct |
39 |
Correct |
200 ms |
42704 KB |
Output is correct |
40 |
Correct |
187 ms |
40264 KB |
Output is correct |
41 |
Correct |
297 ms |
46628 KB |
Output is correct |
42 |
Correct |
134 ms |
31560 KB |
Output is correct |
43 |
Correct |
111 ms |
31200 KB |
Output is correct |
44 |
Correct |
165 ms |
36936 KB |
Output is correct |
45 |
Correct |
181 ms |
37148 KB |
Output is correct |
46 |
Correct |
171 ms |
37192 KB |
Output is correct |
47 |
Correct |
140 ms |
31536 KB |
Output is correct |
48 |
Correct |
136 ms |
31052 KB |
Output is correct |
49 |
Correct |
205 ms |
36316 KB |
Output is correct |
50 |
Correct |
209 ms |
32424 KB |
Output is correct |
51 |
Correct |
220 ms |
36656 KB |
Output is correct |
52 |
Correct |
138 ms |
36244 KB |
Output is correct |
53 |
Correct |
168 ms |
41080 KB |
Output is correct |
54 |
Correct |
202 ms |
46324 KB |
Output is correct |
55 |
Correct |
157 ms |
41280 KB |
Output is correct |