#include<bits/stdc++.h>
using namespace std;
const int N = 5e5 + 5;
int n, m, c[N], last[N], le[N], ri[N], st[N], en[N];
vector < int > q[N];
inline bool check_left(int i){
return st[i] > 1 && ri[st[i] - 1] != -1 && ri[st[i] - 1] <= en[i];
}
inline bool check_right(int i){
return en[i] < n && le[en[i]] != -1 && st[i] <= le[en[i]];
}
int main(){
ios_base::sync_with_stdio(0);cin.tie(0);cout.tie(0);
cin >> n;
for(int i = 1; i < n; i++){
cin >> c[i];
}
for(int i = 1; i <= n; i++){
int x, y;
cin >> x;
while(x--){
cin >> y;
q[i].push_back(y);
}
}
memset(last, -1, sizeof(last));
for(int i = 1; i < n; i++){
for(int j : q[i]){
last[j] = i;
}
le[i] = last[c[i]];
}
memset(last, -1, sizeof(last));
for(int i = n - 1; i >= 1; i--){
for(int j : q[i + 1]){
last[j] = i + 1;
}
ri[i] = last[c[i]];
}
for(int i = 1; i <= n; i++){
st[i] = en[i] = i;
while(true){
if(check_left(i)){
en[i] = max(en[i], en[st[i] - 1]);
st[i] = min(st[i], st[st[i] - 1]);
}
else if(check_right(i)){
en[i] += 1;
}
else{
break;
}
}
}
cin >> m;
while(m--){
int x, y;
cin >> x >> y;
cout << (st[x] <= y && y <= en[x] ? "YES\n" : "NO\n");
}
}
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
16 ms |
14200 KB |
Output is correct |
2 |
Correct |
16 ms |
14328 KB |
Output is correct |
3 |
Correct |
16 ms |
14456 KB |
Output is correct |
4 |
Correct |
16 ms |
14328 KB |
Output is correct |
5 |
Correct |
16 ms |
14200 KB |
Output is correct |
6 |
Correct |
16 ms |
14316 KB |
Output is correct |
7 |
Correct |
15 ms |
14200 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
16 ms |
14200 KB |
Output is correct |
2 |
Correct |
16 ms |
14328 KB |
Output is correct |
3 |
Correct |
16 ms |
14456 KB |
Output is correct |
4 |
Correct |
16 ms |
14328 KB |
Output is correct |
5 |
Correct |
16 ms |
14200 KB |
Output is correct |
6 |
Correct |
16 ms |
14316 KB |
Output is correct |
7 |
Correct |
15 ms |
14200 KB |
Output is correct |
8 |
Correct |
111 ms |
20092 KB |
Output is correct |
9 |
Correct |
110 ms |
20092 KB |
Output is correct |
10 |
Correct |
109 ms |
20552 KB |
Output is correct |
11 |
Correct |
107 ms |
20788 KB |
Output is correct |
12 |
Correct |
97 ms |
19660 KB |
Output is correct |
13 |
Correct |
107 ms |
20392 KB |
Output is correct |
14 |
Correct |
106 ms |
20344 KB |
Output is correct |
15 |
Correct |
105 ms |
20216 KB |
Output is correct |
16 |
Correct |
104 ms |
20132 KB |
Output is correct |
17 |
Correct |
103 ms |
20288 KB |
Output is correct |
18 |
Correct |
107 ms |
20216 KB |
Output is correct |
19 |
Correct |
262 ms |
20216 KB |
Output is correct |
20 |
Correct |
103 ms |
20344 KB |
Output is correct |
21 |
Correct |
100 ms |
20088 KB |
Output is correct |
22 |
Correct |
102 ms |
20172 KB |
Output is correct |
23 |
Correct |
104 ms |
20176 KB |
Output is correct |
24 |
Correct |
102 ms |
19960 KB |
Output is correct |
25 |
Correct |
101 ms |
20092 KB |
Output is correct |
26 |
Correct |
101 ms |
20060 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
181 ms |
28820 KB |
Output is correct |
2 |
Correct |
182 ms |
28596 KB |
Output is correct |
3 |
Correct |
173 ms |
28380 KB |
Output is correct |
4 |
Correct |
188 ms |
28792 KB |
Output is correct |
5 |
Correct |
190 ms |
28792 KB |
Output is correct |
6 |
Correct |
160 ms |
27512 KB |
Output is correct |
7 |
Correct |
162 ms |
27256 KB |
Output is correct |
8 |
Correct |
156 ms |
27260 KB |
Output is correct |
9 |
Correct |
159 ms |
27196 KB |
Output is correct |
10 |
Correct |
156 ms |
27128 KB |
Output is correct |
11 |
Correct |
151 ms |
27256 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
16 ms |
14200 KB |
Output is correct |
2 |
Correct |
16 ms |
14328 KB |
Output is correct |
3 |
Correct |
16 ms |
14456 KB |
Output is correct |
4 |
Correct |
16 ms |
14328 KB |
Output is correct |
5 |
Correct |
16 ms |
14200 KB |
Output is correct |
6 |
Correct |
16 ms |
14316 KB |
Output is correct |
7 |
Correct |
15 ms |
14200 KB |
Output is correct |
8 |
Correct |
111 ms |
20092 KB |
Output is correct |
9 |
Correct |
110 ms |
20092 KB |
Output is correct |
10 |
Correct |
109 ms |
20552 KB |
Output is correct |
11 |
Correct |
107 ms |
20788 KB |
Output is correct |
12 |
Correct |
97 ms |
19660 KB |
Output is correct |
13 |
Correct |
107 ms |
20392 KB |
Output is correct |
14 |
Correct |
106 ms |
20344 KB |
Output is correct |
15 |
Correct |
105 ms |
20216 KB |
Output is correct |
16 |
Correct |
104 ms |
20132 KB |
Output is correct |
17 |
Correct |
103 ms |
20288 KB |
Output is correct |
18 |
Correct |
107 ms |
20216 KB |
Output is correct |
19 |
Correct |
262 ms |
20216 KB |
Output is correct |
20 |
Correct |
103 ms |
20344 KB |
Output is correct |
21 |
Correct |
100 ms |
20088 KB |
Output is correct |
22 |
Correct |
102 ms |
20172 KB |
Output is correct |
23 |
Correct |
104 ms |
20176 KB |
Output is correct |
24 |
Correct |
102 ms |
19960 KB |
Output is correct |
25 |
Correct |
101 ms |
20092 KB |
Output is correct |
26 |
Correct |
101 ms |
20060 KB |
Output is correct |
27 |
Correct |
181 ms |
28820 KB |
Output is correct |
28 |
Correct |
182 ms |
28596 KB |
Output is correct |
29 |
Correct |
173 ms |
28380 KB |
Output is correct |
30 |
Correct |
188 ms |
28792 KB |
Output is correct |
31 |
Correct |
190 ms |
28792 KB |
Output is correct |
32 |
Correct |
160 ms |
27512 KB |
Output is correct |
33 |
Correct |
162 ms |
27256 KB |
Output is correct |
34 |
Correct |
156 ms |
27260 KB |
Output is correct |
35 |
Correct |
159 ms |
27196 KB |
Output is correct |
36 |
Correct |
156 ms |
27128 KB |
Output is correct |
37 |
Correct |
151 ms |
27256 KB |
Output is correct |
38 |
Correct |
291 ms |
47544 KB |
Output is correct |
39 |
Correct |
304 ms |
52432 KB |
Output is correct |
40 |
Correct |
265 ms |
41484 KB |
Output is correct |
41 |
Correct |
278 ms |
50808 KB |
Output is correct |
42 |
Correct |
162 ms |
28280 KB |
Output is correct |
43 |
Correct |
162 ms |
28300 KB |
Output is correct |
44 |
Correct |
227 ms |
36216 KB |
Output is correct |
45 |
Correct |
221 ms |
36292 KB |
Output is correct |
46 |
Correct |
228 ms |
36472 KB |
Output is correct |
47 |
Correct |
157 ms |
28408 KB |
Output is correct |
48 |
Correct |
155 ms |
28280 KB |
Output is correct |
49 |
Correct |
221 ms |
35960 KB |
Output is correct |
50 |
Correct |
215 ms |
36216 KB |
Output is correct |
51 |
Correct |
260 ms |
36472 KB |
Output is correct |
52 |
Correct |
207 ms |
34936 KB |
Output is correct |
53 |
Correct |
255 ms |
41872 KB |
Output is correct |
54 |
Correct |
276 ms |
48508 KB |
Output is correct |
55 |
Correct |
257 ms |
41848 KB |
Output is correct |