oj.uz

Submission #313764

# Submission time Handle Problem Language Result Execution time Memory
313764 2020-10-17T02:02:56 Z VROOM_VARUN Long Mansion (JOI17_long_mansion) C++14
100 / 100
 317 ms 41720 KB 
#include <bits/stdc++.h>
using namespace std;
 
const int MAXN = 5.1e5;
int N;
int C[MAXN];
vector<int> A[MAXN];
 
int last[MAXN];
int prv[MAXN]; // previous position with corresponding key
int nxt[MAXN]; // next
 
int lo[MAXN];
int hi[MAXN];
 
int main() {
	ios::sync_with_stdio(0), cin.tie(0);
	cin >> N;
	for (int i = 1; i <= N-1; i++) {
		cin >> C[i];
	}
	for (int i = 1; i <= N; i++) {
		int B; cin >> B;
		A[i].reserve(B);
		for (int j = 0; j < B; j++) {
			int v; cin >> v;
			A[i].push_back(v);
		}
	}
 
	for (int i = 1; i <= N-1; i++) {
		for (int v : A[i]) {
			last[v] = i;
		}
		prv[i] = last[C[i]];
	}
 
	fill(last + 1, last + N + 1, N+1);
	for (int i = N; i >= 2; i--) {
		for (int v : A[i]) {
			last[v] = i;
		}
		nxt[i-1] = last[C[i-1]];
	}
 
  	int cnt = 0;
  
	for (int i = 1; i <= N; i++) {
		int l = i;
		int r = i;
		while (true) {
            cnt++;
			if (l > 1 && nxt[l-1] <= r) {
				r = max(r, hi[l-1]);
				l = lo[l-1];
				continue;
			}
			if (r+1 <= N && prv[r] >= l) {
				r++;
				continue;
			}
			break;
		}
		lo[i] = l;
		hi[i] = r;
	}
  
  	if(cnt >= ((int)1e7)) {
      cout << "-1\n";
      exit(0);
    }
 
	int Q; cin >> Q;
  
  
	while (Q--) {
		int x, y; cin >> x >> y;
		if (lo[x] <= y && y <= hi[x]) {
			cout << "YES" << '\n';
		} else {
			cout << "NO" << '\n';
		}
	}
 
	return 0;
}

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 10 ms 12416 KB Output is correct
2 Correct 10 ms 12544 KB Output is correct
3 Correct 10 ms 12672 KB Output is correct
4 Correct 10 ms 12544 KB Output is correct
5 Correct 10 ms 12544 KB Output is correct
6 Correct 10 ms 12544 KB Output is correct
7 Correct 9 ms 12544 KB Output is correct

Subtask #2
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 10 ms 12416 KB Output is correct
2 Correct 10 ms 12544 KB Output is correct
3 Correct 10 ms 12672 KB Output is correct
4 Correct 10 ms 12544 KB Output is correct
5 Correct 10 ms 12544 KB Output is correct
6 Correct 10 ms 12544 KB Output is correct
7 Correct 9 ms 12544 KB Output is correct
8 Correct 126 ms 14072 KB Output is correct
9 Correct 129 ms 13944 KB Output is correct
10 Correct 129 ms 14144 KB Output is correct
11 Correct 126 ms 14456 KB Output is correct
12 Correct 123 ms 14328 KB Output is correct
13 Correct 125 ms 14200 KB Output is correct
14 Correct 123 ms 14192 KB Output is correct
15 Correct 122 ms 14268 KB Output is correct
16 Correct 119 ms 14456 KB Output is correct
17 Correct 125 ms 14200 KB Output is correct
18 Correct 125 ms 14200 KB Output is correct
19 Correct 125 ms 14328 KB Output is correct
20 Correct 122 ms 14336 KB Output is correct
21 Correct 122 ms 14456 KB Output is correct
22 Correct 121 ms 14328 KB Output is correct
23 Correct 127 ms 14076 KB Output is correct
24 Correct 126 ms 14072 KB Output is correct
25 Correct 127 ms 14072 KB Output is correct
26 Correct 125 ms 14072 KB Output is correct

Subtask #3
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 199 ms 19592 KB Output is correct
2 Correct 192 ms 19728 KB Output is correct
3 Correct 185 ms 19648 KB Output is correct
4 Correct 191 ms 19704 KB Output is correct
5 Correct 194 ms 19704 KB Output is correct
6 Correct 173 ms 19696 KB Output is correct
7 Correct 171 ms 19832 KB Output is correct
8 Correct 171 ms 19832 KB Output is correct
9 Correct 183 ms 19880 KB Output is correct
10 Correct 168 ms 19832 KB Output is correct
11 Correct 173 ms 19960 KB Output is correct

Subtask #4
75.0 / 75.0

# Verdict Execution time Memory Grader output
1 Correct 10 ms 12416 KB Output is correct
2 Correct 10 ms 12544 KB Output is correct
3 Correct 10 ms 12672 KB Output is correct
4 Correct 10 ms 12544 KB Output is correct
5 Correct 10 ms 12544 KB Output is correct
6 Correct 10 ms 12544 KB Output is correct
7 Correct 9 ms 12544 KB Output is correct
8 Correct 126 ms 14072 KB Output is correct
9 Correct 129 ms 13944 KB Output is correct
10 Correct 129 ms 14144 KB Output is correct
11 Correct 126 ms 14456 KB Output is correct
12 Correct 123 ms 14328 KB Output is correct
13 Correct 125 ms 14200 KB Output is correct
14 Correct 123 ms 14192 KB Output is correct
15 Correct 122 ms 14268 KB Output is correct
16 Correct 119 ms 14456 KB Output is correct
17 Correct 125 ms 14200 KB Output is correct
18 Correct 125 ms 14200 KB Output is correct
19 Correct 125 ms 14328 KB Output is correct
20 Correct 122 ms 14336 KB Output is correct
21 Correct 122 ms 14456 KB Output is correct
22 Correct 121 ms 14328 KB Output is correct
23 Correct 127 ms 14076 KB Output is correct
24 Correct 126 ms 14072 KB Output is correct
25 Correct 127 ms 14072 KB Output is correct
26 Correct 125 ms 14072 KB Output is correct
27 Correct 199 ms 19592 KB Output is correct
28 Correct 192 ms 19728 KB Output is correct
29 Correct 185 ms 19648 KB Output is correct
30 Correct 191 ms 19704 KB Output is correct
31 Correct 194 ms 19704 KB Output is correct
32 Correct 173 ms 19696 KB Output is correct
33 Correct 171 ms 19832 KB Output is correct
34 Correct 171 ms 19832 KB Output is correct
35 Correct 183 ms 19880 KB Output is correct
36 Correct 168 ms 19832 KB Output is correct
37 Correct 173 ms 19960 KB Output is correct
38 Correct 295 ms 35836 KB Output is correct
39 Correct 317 ms 41208 KB Output is correct
40 Correct 267 ms 30328 KB Output is correct
41 Correct 305 ms 41720 KB Output is correct
42 Correct 173 ms 19576 KB Output is correct
43 Correct 174 ms 19680 KB Output is correct
44 Correct 227 ms 25048 KB Output is correct
45 Correct 231 ms 25080 KB Output is correct
46 Correct 231 ms 25208 KB Output is correct
47 Correct 173 ms 19704 KB Output is correct
48 Correct 174 ms 19704 KB Output is correct
49 Correct 233 ms 25080 KB Output is correct
50 Correct 235 ms 25208 KB Output is correct
51 Correct 232 ms 25080 KB Output is correct
52 Correct 219 ms 24824 KB Output is correct
53 Correct 268 ms 30360 KB Output is correct
54 Correct 301 ms 35832 KB Output is correct
55 Correct 261 ms 30456 KB Output is correct