Submission #796748

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
796748	2023-07-28T16:50:31 Z	GusterGoose27	Passport (JOI23_passport)	C++17	100 / 100	664 ms	74516 KB

passport

#include <bits/stdc++.h>
 
using namespace std;
 
const int MAXN = 2e5+5;
const int inf = 1e9;
 
typedef pair<int, int> pii;
 
int dist[2][2*MAXN];
int sumdist[2*MAXN];
int n;
 
vector<pii> edges[2*MAXN];
 
void build() {
	for (int i = 1; i < n; i++) {
		edges[2*i].push_back(pii(i, 0));
		edges[2*i+1].push_back(pii(i, 0));
	}
}

void assign(int i, int l, int r) {
	for (; r > l; l /= 2, r /= 2) {
		if (l & 1) edges[l++].push_back(pii(i, 1));
		if (r & 1) edges[--r].push_back(pii(i, 1));
	}
}
 
void dijkstra(int curdist[]) {
	priority_queue<pii, vector<pii>, greater<pii>> pq;
	for (int i = 0; i < 2*n; i++)
		pq.push(pii(curdist[i], i));
	while (!pq.empty()) {
		pii tp = pq.top();
		pq.pop();
		int cur = tp.second;
		if (tp.first > curdist[cur]) continue;
		for (pii p: edges[cur]) {
			int nxtdist = tp.first+p.second;
			if (nxtdist < curdist[p.first]) {
				curdist[p.first] = nxtdist;
				pq.push(pii(nxtdist, p.first));
			}
		}
	}
}
 
int main() {
	ios_base::sync_with_stdio(false); cin.tie(NULL);
	cin >> n;
	build();
	fill(dist[0], dist[0]+2*n, inf);
	fill(dist[1], dist[1]+2*n, inf);
	for (int i = 0; i < n; i++) {
		int l, r; cin >> l >> r;
		l--; r--;
		assign(i+n, l+n, r+n+1);
		if (l == 0) dist[0][i+n] = 0;
		if (r == n-1) dist[1][i+n] = 0;
	}
	dijkstra(dist[0]);
	dijkstra(dist[1]);
	for (int i = 0; i < 2*n; i++) {
		sumdist[i] = (i < n) ? inf : min(inf, dist[0][i]+dist[1][i]);
	}
	// for (int i = n; i < 2*n; i++) cerr << sumdist[i] << '\n';
	dijkstra(sumdist);
	int q; cin >> q;
	for (int i = 0; i < q; i++) {
		int s; cin >> s; s += n-1;
		// cerr << dist[0][s] << ' ' << dist[1][s] << '\n';
		cout << ((sumdist[s] < inf) ? sumdist[s]+1 : -1) << '\n';
	}
}

Subtask #1
6.0 / 6.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	5 ms	9684 KB	Output is correct
2	Correct	4 ms	9684 KB	Output is correct
3	Correct	5 ms	9684 KB	Output is correct
4	Correct	599 ms	62008 KB	Output is correct
5	Correct	360 ms	42012 KB	Output is correct
6	Correct	301 ms	38756 KB	Output is correct
7	Correct	264 ms	56520 KB	Output is correct
8	Correct	191 ms	53864 KB	Output is correct

Subtask #2
16.0 / 16.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	4 ms	9684 KB	Output is correct
2	Correct	4 ms	9684 KB	Output is correct
3	Correct	4 ms	9684 KB	Output is correct
4	Correct	4 ms	9684 KB	Output is correct
5	Correct	4 ms	9684 KB	Output is correct
6	Correct	4 ms	9684 KB	Output is correct
7	Correct	4 ms	9684 KB	Output is correct
8	Correct	4 ms	9684 KB	Output is correct
9	Correct	5 ms	9684 KB	Output is correct
10	Correct	4 ms	9680 KB	Output is correct
11	Correct	7 ms	9684 KB	Output is correct
12	Correct	5 ms	9684 KB	Output is correct
13	Correct	4 ms	9684 KB	Output is correct
14	Correct	5 ms	9684 KB	Output is correct
15	Correct	5 ms	9684 KB	Output is correct

Subtask #3
24.0 / 24.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	4 ms	9684 KB	Output is correct
2	Correct	4 ms	9684 KB	Output is correct
3	Correct	4 ms	9684 KB	Output is correct
4	Correct	4 ms	9684 KB	Output is correct
5	Correct	4 ms	9684 KB	Output is correct
6	Correct	4 ms	9684 KB	Output is correct
7	Correct	4 ms	9684 KB	Output is correct
8	Correct	4 ms	9684 KB	Output is correct
9	Correct	5 ms	9684 KB	Output is correct
10	Correct	4 ms	9680 KB	Output is correct
11	Correct	7 ms	9684 KB	Output is correct
12	Correct	5 ms	9684 KB	Output is correct
13	Correct	4 ms	9684 KB	Output is correct
14	Correct	5 ms	9684 KB	Output is correct
15	Correct	5 ms	9684 KB	Output is correct
16	Correct	10 ms	10196 KB	Output is correct
17	Correct	8 ms	10068 KB	Output is correct
18	Correct	8 ms	10324 KB	Output is correct
19	Correct	9 ms	10368 KB	Output is correct
20	Correct	7 ms	10068 KB	Output is correct
21	Correct	7 ms	10068 KB	Output is correct
22	Correct	6 ms	10324 KB	Output is correct
23	Correct	8 ms	10252 KB	Output is correct
24	Correct	7 ms	10196 KB	Output is correct

Subtask #4
8.0 / 8.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	4 ms	9684 KB	Output is correct
2	Correct	4 ms	9684 KB	Output is correct
3	Correct	4 ms	9684 KB	Output is correct
4	Correct	4 ms	9684 KB	Output is correct
5	Correct	4 ms	9684 KB	Output is correct
6	Correct	4 ms	9684 KB	Output is correct
7	Correct	4 ms	9684 KB	Output is correct
8	Correct	4 ms	9684 KB	Output is correct
9	Correct	5 ms	9684 KB	Output is correct
10	Correct	4 ms	9680 KB	Output is correct
11	Correct	7 ms	9684 KB	Output is correct
12	Correct	5 ms	9684 KB	Output is correct
13	Correct	4 ms	9684 KB	Output is correct
14	Correct	5 ms	9684 KB	Output is correct
15	Correct	5 ms	9684 KB	Output is correct
16	Correct	10 ms	10196 KB	Output is correct
17	Correct	8 ms	10068 KB	Output is correct
18	Correct	8 ms	10324 KB	Output is correct
19	Correct	9 ms	10368 KB	Output is correct
20	Correct	7 ms	10068 KB	Output is correct
21	Correct	7 ms	10068 KB	Output is correct
22	Correct	6 ms	10324 KB	Output is correct
23	Correct	8 ms	10252 KB	Output is correct
24	Correct	7 ms	10196 KB	Output is correct
25	Correct	4 ms	9684 KB	Output is correct
26	Correct	5 ms	9684 KB	Output is correct
27	Correct	9 ms	10196 KB	Output is correct
28	Correct	8 ms	10152 KB	Output is correct
29	Correct	7 ms	10068 KB	Output is correct
30	Correct	7 ms	10068 KB	Output is correct
31	Correct	8 ms	10196 KB	Output is correct

Subtask #5
46.0 / 46.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	5 ms	9684 KB	Output is correct
2	Correct	4 ms	9684 KB	Output is correct
3	Correct	5 ms	9684 KB	Output is correct
4	Correct	599 ms	62008 KB	Output is correct
5	Correct	360 ms	42012 KB	Output is correct
6	Correct	301 ms	38756 KB	Output is correct
7	Correct	264 ms	56520 KB	Output is correct
8	Correct	191 ms	53864 KB	Output is correct
9	Correct	4 ms	9684 KB	Output is correct
10	Correct	4 ms	9684 KB	Output is correct
11	Correct	4 ms	9684 KB	Output is correct
12	Correct	4 ms	9684 KB	Output is correct
13	Correct	4 ms	9684 KB	Output is correct
14	Correct	4 ms	9684 KB	Output is correct
15	Correct	4 ms	9684 KB	Output is correct
16	Correct	4 ms	9684 KB	Output is correct
17	Correct	5 ms	9684 KB	Output is correct
18	Correct	4 ms	9680 KB	Output is correct
19	Correct	7 ms	9684 KB	Output is correct
20	Correct	5 ms	9684 KB	Output is correct
21	Correct	4 ms	9684 KB	Output is correct
22	Correct	5 ms	9684 KB	Output is correct
23	Correct	5 ms	9684 KB	Output is correct
24	Correct	10 ms	10196 KB	Output is correct
25	Correct	8 ms	10068 KB	Output is correct
26	Correct	8 ms	10324 KB	Output is correct
27	Correct	9 ms	10368 KB	Output is correct
28	Correct	7 ms	10068 KB	Output is correct
29	Correct	7 ms	10068 KB	Output is correct
30	Correct	6 ms	10324 KB	Output is correct
31	Correct	8 ms	10252 KB	Output is correct
32	Correct	7 ms	10196 KB	Output is correct
33	Correct	4 ms	9684 KB	Output is correct
34	Correct	5 ms	9684 KB	Output is correct
35	Correct	9 ms	10196 KB	Output is correct
36	Correct	8 ms	10152 KB	Output is correct
37	Correct	7 ms	10068 KB	Output is correct
38	Correct	7 ms	10068 KB	Output is correct
39	Correct	8 ms	10196 KB	Output is correct
40	Correct	664 ms	68228 KB	Output is correct
41	Correct	412 ms	44920 KB	Output is correct
42	Correct	466 ms	74384 KB	Output is correct
43	Correct	471 ms	74516 KB	Output is correct
44	Correct	322 ms	41564 KB	Output is correct
45	Correct	325 ms	45784 KB	Output is correct
46	Correct	143 ms	24948 KB	Output is correct
47	Correct	369 ms	56300 KB	Output is correct
48	Correct	347 ms	56984 KB	Output is correct

Submission #796748

Compilation message

Subtask #1 6.0 / 6.0

Subtask #2 16.0 / 16.0

Subtask #3 24.0 / 24.0

Subtask #4 8.0 / 8.0

Subtask #5 46.0 / 46.0

Subtask #1
6.0 / 6.0

Subtask #2
16.0 / 16.0

Subtask #3
24.0 / 24.0

Subtask #4
8.0 / 8.0

Subtask #5
46.0 / 46.0