oj.uz

Submission #749905

# Submission time Handle Problem Language Result Execution time Memory
749905 2023-05-28T23:39:04 Z Cyber_Wolf Passport (JOI23_passport) C++17
100 / 100
 1068 ms 159308 KB 
#include <bits/stdc++.h>
#pragma GCC optimize("Ofast")

using namespace std;

#define lg long long
#define fastio ios_base::sync_with_stdio(0);cin.tie(0);cout.tie(0);

const lg N = 1e6+5;

vector<array<lg, 2>> adj[N];
lg dis[2][N], dist[N], id, n, in_queue[N];

void propagate(lg node, lg lr, lg hr, lg idx, lg lq, lg hq)
{
	if(lq > hr || lr > hq)	return;
	if(lq <= lr && hr <= hq)
	{
		adj[node].push_back({idx, 0});
		return;
	}
	lg mid = (lr+hr)/2;
	propagate(node << 1, lr, mid, idx, lq, hq);
	propagate(node << 1 | 1, mid+1, hr, idx, lq, hq);
	return;
}

void dijkstra(lg t, lg src)
{
	memset(dis[t], 0x3f, sizeof(dis[t]));
	dis[t][src] = 0;
	priority_queue<array<lg, 2>> pq;
	pq.push({0, src});
	in_queue[src] = true;
	while(pq.size())
	{
		lg u = pq.top()[1];
		in_queue[u] = false;
		pq.pop();
		for(auto [it, c] : adj[u])
		{
			if(dis[t][it] > dis[t][u]+c)
			{
				dis[t][it] = dis[t][u]+c;
				if(in_queue[it])	continue;
				pq.push({-dis[t][it], it});
				in_queue[it] = true;
			}
		}
	}
	return;
}

int main()
{
	fastio;
	cin >> n;
	lg sn = 1;
	while(sn < n)	sn *= 2;
	id = sn*2+1;
	for(int i = 1; i <= n; i++)
	{
		lg x, y;
		cin >> x >> y;
		id++;
		adj[id].push_back({i-1+sn, 1});
		propagate(1, 1, sn, id, x, y);
	}
	for(int i = 1; i < sn; i++)
	{
		adj[i*2].push_back({i, 0});
		adj[i*2+1].push_back({i, 0});
	}
	// for(int i = 1; i <= id; i++)
	// {
		// for(auto [it, c] : adj[i])
		// {
			// cout << i << " " << it << ' ' << c << '\n';
		// }
	// }
	dijkstra(0, sn);
	dijkstra(1, sn+n-1);
	priority_queue<array<lg, 2>> pq;
	for(int i = 1; i <= id; i++)	dist[i] += dis[0][i]+dis[1][i];
	for(int i = 1; i <= id; i++)	
	{
		if(dist[i] > 1e9)	continue;
		pq.push({-dist[i], i}), in_queue[i] = 1;
	}
	while(pq.size())
	{
		lg u = pq.top()[1];
		in_queue[u] = false;
		pq.pop();
		for(auto [it, c] : adj[u])
		{
			if(dist[it] > dist[u]+c)
			{
				dist[it] = dist[u]+c;
				if(in_queue[it])	continue;
				pq.push({-dist[it], it});
				in_queue[it] = true;
			}
		}
	}
	lg q;
	cin >> q;
	while(q--)
	{
		lg node;
		cin >> node;
		if(dist[node+sn-1] > 1e9)	dist[node+sn-1] = -1;
		cout << dist[node+sn-1] << '\n';
	}

    return 0;
}

Subtask #1
6.0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 18 ms 39380 KB Output is correct
2 Correct 20 ms 39432 KB Output is correct
3 Correct 18 ms 39392 KB Output is correct
4 Correct 981 ms 144396 KB Output is correct
5 Correct 502 ms 107572 KB Output is correct
6 Correct 275 ms 100652 KB Output is correct
7 Correct 364 ms 123608 KB Output is correct
8 Correct 192 ms 107464 KB Output is correct

Subtask #2
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 20 ms 39428 KB Output is correct
2 Correct 20 ms 39380 KB Output is correct
3 Correct 19 ms 39380 KB Output is correct
4 Correct 19 ms 39476 KB Output is correct
5 Correct 20 ms 39432 KB Output is correct
6 Correct 21 ms 39560 KB Output is correct
7 Correct 19 ms 39428 KB Output is correct
8 Correct 20 ms 39484 KB Output is correct
9 Correct 19 ms 39380 KB Output is correct
10 Correct 20 ms 39372 KB Output is correct
11 Correct 20 ms 39544 KB Output is correct
12 Correct 20 ms 39508 KB Output is correct
13 Correct 21 ms 39620 KB Output is correct
14 Correct 20 ms 39576 KB Output is correct
15 Correct 20 ms 39556 KB Output is correct

Subtask #3
24.0 / 24.0

# Verdict Execution time Memory Grader output
1 Correct 20 ms 39428 KB Output is correct
2 Correct 20 ms 39380 KB Output is correct
3 Correct 19 ms 39380 KB Output is correct
4 Correct 19 ms 39476 KB Output is correct
5 Correct 20 ms 39432 KB Output is correct
6 Correct 21 ms 39560 KB Output is correct
7 Correct 19 ms 39428 KB Output is correct
8 Correct 20 ms 39484 KB Output is correct
9 Correct 19 ms 39380 KB Output is correct
10 Correct 20 ms 39372 KB Output is correct
11 Correct 20 ms 39544 KB Output is correct
12 Correct 20 ms 39508 KB Output is correct
13 Correct 21 ms 39620 KB Output is correct
14 Correct 20 ms 39576 KB Output is correct
15 Correct 20 ms 39556 KB Output is correct
16 Correct 24 ms 40524 KB Output is correct
17 Correct 25 ms 40404 KB Output is correct
18 Correct 24 ms 40732 KB Output is correct
19 Correct 25 ms 40660 KB Output is correct
20 Correct 24 ms 40260 KB Output is correct
21 Correct 22 ms 40164 KB Output is correct
22 Correct 21 ms 40436 KB Output is correct
23 Correct 27 ms 40440 KB Output is correct
24 Correct 22 ms 40404 KB Output is correct

Subtask #4
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 20 ms 39428 KB Output is correct
2 Correct 20 ms 39380 KB Output is correct
3 Correct 19 ms 39380 KB Output is correct
4 Correct 19 ms 39476 KB Output is correct
5 Correct 20 ms 39432 KB Output is correct
6 Correct 21 ms 39560 KB Output is correct
7 Correct 19 ms 39428 KB Output is correct
8 Correct 20 ms 39484 KB Output is correct
9 Correct 19 ms 39380 KB Output is correct
10 Correct 20 ms 39372 KB Output is correct
11 Correct 20 ms 39544 KB Output is correct
12 Correct 20 ms 39508 KB Output is correct
13 Correct 21 ms 39620 KB Output is correct
14 Correct 20 ms 39576 KB Output is correct
15 Correct 20 ms 39556 KB Output is correct
16 Correct 24 ms 40524 KB Output is correct
17 Correct 25 ms 40404 KB Output is correct
18 Correct 24 ms 40732 KB Output is correct
19 Correct 25 ms 40660 KB Output is correct
20 Correct 24 ms 40260 KB Output is correct
21 Correct 22 ms 40164 KB Output is correct
22 Correct 21 ms 40436 KB Output is correct
23 Correct 27 ms 40440 KB Output is correct
24 Correct 22 ms 40404 KB Output is correct
25 Correct 18 ms 39420 KB Output is correct
26 Correct 18 ms 39428 KB Output is correct
27 Correct 25 ms 40596 KB Output is correct
28 Correct 24 ms 40404 KB Output is correct
29 Correct 22 ms 40336 KB Output is correct
30 Correct 23 ms 40200 KB Output is correct
31 Correct 22 ms 40504 KB Output is correct

Subtask #5
46.0 / 46.0

# Verdict Execution time Memory Grader output
1 Correct 18 ms 39380 KB Output is correct
2 Correct 20 ms 39432 KB Output is correct
3 Correct 18 ms 39392 KB Output is correct
4 Correct 981 ms 144396 KB Output is correct
5 Correct 502 ms 107572 KB Output is correct
6 Correct 275 ms 100652 KB Output is correct
7 Correct 364 ms 123608 KB Output is correct
8 Correct 192 ms 107464 KB Output is correct
9 Correct 20 ms 39428 KB Output is correct
10 Correct 20 ms 39380 KB Output is correct
11 Correct 19 ms 39380 KB Output is correct
12 Correct 19 ms 39476 KB Output is correct
13 Correct 20 ms 39432 KB Output is correct
14 Correct 21 ms 39560 KB Output is correct
15 Correct 19 ms 39428 KB Output is correct
16 Correct 20 ms 39484 KB Output is correct
17 Correct 19 ms 39380 KB Output is correct
18 Correct 20 ms 39372 KB Output is correct
19 Correct 20 ms 39544 KB Output is correct
20 Correct 20 ms 39508 KB Output is correct
21 Correct 21 ms 39620 KB Output is correct
22 Correct 20 ms 39576 KB Output is correct
23 Correct 20 ms 39556 KB Output is correct
24 Correct 24 ms 40524 KB Output is correct
25 Correct 25 ms 40404 KB Output is correct
26 Correct 24 ms 40732 KB Output is correct
27 Correct 25 ms 40660 KB Output is correct
28 Correct 24 ms 40260 KB Output is correct
29 Correct 22 ms 40164 KB Output is correct
30 Correct 21 ms 40436 KB Output is correct
31 Correct 27 ms 40440 KB Output is correct
32 Correct 22 ms 40404 KB Output is correct
33 Correct 18 ms 39420 KB Output is correct
34 Correct 18 ms 39428 KB Output is correct
35 Correct 25 ms 40596 KB Output is correct
36 Correct 24 ms 40404 KB Output is correct
37 Correct 22 ms 40336 KB Output is correct
38 Correct 23 ms 40200 KB Output is correct
39 Correct 22 ms 40504 KB Output is correct
40 Correct 1068 ms 144780 KB Output is correct
41 Correct 525 ms 107752 KB Output is correct
42 Correct 626 ms 159308 KB Output is correct
43 Correct 624 ms 158316 KB Output is correct
44 Correct 306 ms 100556 KB Output is correct
45 Correct 358 ms 102440 KB Output is correct
46 Correct 248 ms 66964 KB Output is correct
47 Correct 665 ms 121968 KB Output is correct
48 Correct 439 ms 117744 KB Output is correct