#include <bits/stdc++.h>
using namespace std;
using ll = long long;
const int maxn = 5e5+5;
int n, Q, c[maxn], last[maxn], le[maxn], ri[maxn], st[maxn], en[maxn];
vector<int> q[maxn];
bool cleft(int i) {
return st[i] > 1 && ri[st[i]-1] != -1 && ri[st[i]-1] <= en[i];
}
bool cright(int i) {
return en[i] < n && le[en[i]] != -1 && st[i] <= le[en[i]];
}
int main()
{
ios_base::sync_with_stdio(false); cin.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 (cleft(i)) {
en[i] = max(en[i],en[st[i]-1]);
st[i] = min(st[i],st[st[i]-1]);
}
else if (cright(i)) ++en[i];
else break;
}
}
cin >> Q;
while (Q--) {
int a, b; cin >> a >> b;
cout << (st[a] <= b && b <= en[a] ? "YES" : "NO") << '\n';
}
}
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
22 ms |
14208 KB |
Output is correct |
2 |
Correct |
17 ms |
14336 KB |
Output is correct |
3 |
Correct |
19 ms |
14336 KB |
Output is correct |
4 |
Correct |
16 ms |
14336 KB |
Output is correct |
5 |
Correct |
16 ms |
14208 KB |
Output is correct |
6 |
Correct |
17 ms |
14336 KB |
Output is correct |
7 |
Correct |
16 ms |
14208 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
22 ms |
14208 KB |
Output is correct |
2 |
Correct |
17 ms |
14336 KB |
Output is correct |
3 |
Correct |
19 ms |
14336 KB |
Output is correct |
4 |
Correct |
16 ms |
14336 KB |
Output is correct |
5 |
Correct |
16 ms |
14208 KB |
Output is correct |
6 |
Correct |
17 ms |
14336 KB |
Output is correct |
7 |
Correct |
16 ms |
14208 KB |
Output is correct |
8 |
Correct |
129 ms |
16528 KB |
Output is correct |
9 |
Correct |
137 ms |
16476 KB |
Output is correct |
10 |
Correct |
156 ms |
16736 KB |
Output is correct |
11 |
Correct |
135 ms |
16888 KB |
Output is correct |
12 |
Correct |
139 ms |
16888 KB |
Output is correct |
13 |
Correct |
143 ms |
16760 KB |
Output is correct |
14 |
Correct |
163 ms |
16892 KB |
Output is correct |
15 |
Correct |
135 ms |
16888 KB |
Output is correct |
16 |
Correct |
134 ms |
17016 KB |
Output is correct |
17 |
Correct |
128 ms |
16760 KB |
Output is correct |
18 |
Correct |
165 ms |
16756 KB |
Output is correct |
19 |
Correct |
124 ms |
16760 KB |
Output is correct |
20 |
Correct |
125 ms |
16888 KB |
Output is correct |
21 |
Correct |
121 ms |
17016 KB |
Output is correct |
22 |
Correct |
145 ms |
16840 KB |
Output is correct |
23 |
Correct |
125 ms |
16640 KB |
Output is correct |
24 |
Correct |
133 ms |
16632 KB |
Output is correct |
25 |
Correct |
141 ms |
16632 KB |
Output is correct |
26 |
Correct |
210 ms |
16504 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
219 ms |
22296 KB |
Output is correct |
2 |
Correct |
226 ms |
22048 KB |
Output is correct |
3 |
Correct |
217 ms |
21908 KB |
Output is correct |
4 |
Correct |
216 ms |
22008 KB |
Output is correct |
5 |
Correct |
213 ms |
21948 KB |
Output is correct |
6 |
Correct |
184 ms |
21488 KB |
Output is correct |
7 |
Correct |
180 ms |
21752 KB |
Output is correct |
8 |
Correct |
180 ms |
21708 KB |
Output is correct |
9 |
Correct |
192 ms |
21544 KB |
Output is correct |
10 |
Correct |
189 ms |
21624 KB |
Output is correct |
11 |
Correct |
205 ms |
21700 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
22 ms |
14208 KB |
Output is correct |
2 |
Correct |
17 ms |
14336 KB |
Output is correct |
3 |
Correct |
19 ms |
14336 KB |
Output is correct |
4 |
Correct |
16 ms |
14336 KB |
Output is correct |
5 |
Correct |
16 ms |
14208 KB |
Output is correct |
6 |
Correct |
17 ms |
14336 KB |
Output is correct |
7 |
Correct |
16 ms |
14208 KB |
Output is correct |
8 |
Correct |
129 ms |
16528 KB |
Output is correct |
9 |
Correct |
137 ms |
16476 KB |
Output is correct |
10 |
Correct |
156 ms |
16736 KB |
Output is correct |
11 |
Correct |
135 ms |
16888 KB |
Output is correct |
12 |
Correct |
139 ms |
16888 KB |
Output is correct |
13 |
Correct |
143 ms |
16760 KB |
Output is correct |
14 |
Correct |
163 ms |
16892 KB |
Output is correct |
15 |
Correct |
135 ms |
16888 KB |
Output is correct |
16 |
Correct |
134 ms |
17016 KB |
Output is correct |
17 |
Correct |
128 ms |
16760 KB |
Output is correct |
18 |
Correct |
165 ms |
16756 KB |
Output is correct |
19 |
Correct |
124 ms |
16760 KB |
Output is correct |
20 |
Correct |
125 ms |
16888 KB |
Output is correct |
21 |
Correct |
121 ms |
17016 KB |
Output is correct |
22 |
Correct |
145 ms |
16840 KB |
Output is correct |
23 |
Correct |
125 ms |
16640 KB |
Output is correct |
24 |
Correct |
133 ms |
16632 KB |
Output is correct |
25 |
Correct |
141 ms |
16632 KB |
Output is correct |
26 |
Correct |
210 ms |
16504 KB |
Output is correct |
27 |
Correct |
219 ms |
22296 KB |
Output is correct |
28 |
Correct |
226 ms |
22048 KB |
Output is correct |
29 |
Correct |
217 ms |
21908 KB |
Output is correct |
30 |
Correct |
216 ms |
22008 KB |
Output is correct |
31 |
Correct |
213 ms |
21948 KB |
Output is correct |
32 |
Correct |
184 ms |
21488 KB |
Output is correct |
33 |
Correct |
180 ms |
21752 KB |
Output is correct |
34 |
Correct |
180 ms |
21708 KB |
Output is correct |
35 |
Correct |
192 ms |
21544 KB |
Output is correct |
36 |
Correct |
189 ms |
21624 KB |
Output is correct |
37 |
Correct |
205 ms |
21700 KB |
Output is correct |
38 |
Correct |
371 ms |
36308 KB |
Output is correct |
39 |
Correct |
356 ms |
41464 KB |
Output is correct |
40 |
Correct |
360 ms |
31252 KB |
Output is correct |
41 |
Correct |
343 ms |
41592 KB |
Output is correct |
42 |
Correct |
188 ms |
21328 KB |
Output is correct |
43 |
Correct |
212 ms |
21240 KB |
Output is correct |
44 |
Correct |
273 ms |
26428 KB |
Output is correct |
45 |
Correct |
356 ms |
26364 KB |
Output is correct |
46 |
Correct |
280 ms |
26492 KB |
Output is correct |
47 |
Correct |
204 ms |
21240 KB |
Output is correct |
48 |
Correct |
205 ms |
21496 KB |
Output is correct |
49 |
Correct |
269 ms |
26360 KB |
Output is correct |
50 |
Correct |
301 ms |
26408 KB |
Output is correct |
51 |
Correct |
285 ms |
26332 KB |
Output is correct |
52 |
Correct |
290 ms |
26252 KB |
Output is correct |
53 |
Correct |
327 ms |
31152 KB |
Output is correct |
54 |
Correct |
370 ms |
36088 KB |
Output is correct |
55 |
Correct |
318 ms |
31236 KB |
Output is correct |