oj.uz

Submission #561931

# Submission time Handle Problem Language Result Execution time Memory
561931 2022-05-13T18:58:23 Z timreizin Meetings (JOI19_meetings) C++17
100 / 100
 672 ms 836 KB 
#pragma GCC optimize("Ofast,unroll-loops")
#pragma GCC target("avx2,bmi,bmi2,popcnt,lzcnt")

#include "meetings.h"
#include <random>
#include <vector>
#include <set>
#include <numeric>
#include <algorithm>
#include <map>

using namespace std;

vector<vector<int>> adj;
mt19937 gen(134797);

void find(vector<int> &vertices)
{
    if (vertices.size() == 1) return;
    if (vertices.size() == 2)
    {
        adj[vertices.front()].push_back(vertices.back());
        adj[vertices.back()].push_back(vertices.front());
        return;
    }
    vector<int> path;
    map<int, vector<int>> comps;
    int x = uniform_int_distribution<>(0, (int)vertices.size() - 1)(gen);
    int y = x;
    while (y == x) y = uniform_int_distribution<>(0, (int)vertices.size() - 1)(gen);
    x = vertices[x];
    y = vertices[y];
    path.push_back(x);
    for (int i = 0; i < vertices.size(); ++i)
    {
        if (x == vertices[i] || y == vertices[i]) continue;
        int r = Query(x, y, vertices[i]);
        if (r != vertices[i]) comps[r].push_back(vertices[i]);
        else path.push_back(r);
    }
    for (auto &[pivot, vertices] : comps)
    {
        vertices.push_back(pivot);
        find(vertices);
    }
    sort(path.begin() + 1, path.end(), [&x](int a, int b) { return Query(x, a, b) == a; });
    path.push_back(y);
    for (int i = 0; i + 1 < path.size(); ++i)
    {
        adj[path[i]].push_back(path[i + 1]);
        adj[path[i + 1]].push_back(path[i]);
    }
}

void Solve(int n)
{
    adj.resize(n);
    set<int> path;
    vector<int> vertices(n);
    iota(vertices.begin(), vertices.end(), 0);
    find(vertices);
    for (int i = 0; i < n; ++i) for (int u : adj[i]) if (i < u) Bridge(i, u);
}

Compilation message

meetings.cpp: In function 'void find(std::vector<int>&)':
meetings.cpp:34:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   34 |     for (int i = 0; i < vertices.size(); ++i)
      |                     ~~^~~~~~~~~~~~~~~~~
meetings.cpp:48:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   48 |     for (int i = 0; i + 1 < path.size(); ++i)
      |                     ~~~~~~^~~~~~~~~~~~~

Subtask #1
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 336 KB Output is correct
2 Correct 0 ms 336 KB Output is correct
3 Correct 0 ms 220 KB Output is correct
4 Correct 0 ms 336 KB Output is correct
5 Correct 0 ms 336 KB Output is correct
6 Correct 0 ms 336 KB Output is correct
7 Correct 0 ms 336 KB Output is correct
8 Correct 0 ms 336 KB Output is correct
9 Correct 0 ms 336 KB Output is correct
10 Correct 0 ms 336 KB Output is correct
11 Correct 0 ms 336 KB Output is correct
12 Correct 0 ms 336 KB Output is correct
13 Correct 0 ms 336 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 336 KB Output is correct
2 Correct 0 ms 336 KB Output is correct
3 Correct 0 ms 220 KB Output is correct
4 Correct 0 ms 336 KB Output is correct
5 Correct 0 ms 336 KB Output is correct
6 Correct 0 ms 336 KB Output is correct
7 Correct 0 ms 336 KB Output is correct
8 Correct 0 ms 336 KB Output is correct
9 Correct 0 ms 336 KB Output is correct
10 Correct 0 ms 336 KB Output is correct
11 Correct 0 ms 336 KB Output is correct
12 Correct 0 ms 336 KB Output is correct
13 Correct 0 ms 336 KB Output is correct
14 Correct 0 ms 336 KB Output is correct
15 Correct 1 ms 336 KB Output is correct
16 Correct 0 ms 336 KB Output is correct
17 Correct 0 ms 336 KB Output is correct
18 Correct 1 ms 336 KB Output is correct
19 Correct 1 ms 336 KB Output is correct
20 Correct 1 ms 336 KB Output is correct
21 Correct 1 ms 336 KB Output is correct
22 Correct 1 ms 336 KB Output is correct
23 Correct 0 ms 336 KB Output is correct
24 Correct 1 ms 336 KB Output is correct
25 Correct 1 ms 336 KB Output is correct
26 Correct 1 ms 336 KB Output is correct

Subtask #3
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 336 KB Output is correct
2 Correct 0 ms 336 KB Output is correct
3 Correct 0 ms 220 KB Output is correct
4 Correct 0 ms 336 KB Output is correct
5 Correct 0 ms 336 KB Output is correct
6 Correct 0 ms 336 KB Output is correct
7 Correct 0 ms 336 KB Output is correct
8 Correct 0 ms 336 KB Output is correct
9 Correct 0 ms 336 KB Output is correct
10 Correct 0 ms 336 KB Output is correct
11 Correct 0 ms 336 KB Output is correct
12 Correct 0 ms 336 KB Output is correct
13 Correct 0 ms 336 KB Output is correct
14 Correct 0 ms 336 KB Output is correct
15 Correct 1 ms 336 KB Output is correct
16 Correct 0 ms 336 KB Output is correct
17 Correct 0 ms 336 KB Output is correct
18 Correct 1 ms 336 KB Output is correct
19 Correct 1 ms 336 KB Output is correct
20 Correct 1 ms 336 KB Output is correct
21 Correct 1 ms 336 KB Output is correct
22 Correct 1 ms 336 KB Output is correct
23 Correct 0 ms 336 KB Output is correct
24 Correct 1 ms 336 KB Output is correct
25 Correct 1 ms 336 KB Output is correct
26 Correct 1 ms 336 KB Output is correct
27 Correct 4 ms 336 KB Output is correct
28 Correct 3 ms 336 KB Output is correct
29 Correct 5 ms 336 KB Output is correct
30 Correct 4 ms 336 KB Output is correct
31 Correct 5 ms 336 KB Output is correct
32 Correct 6 ms 380 KB Output is correct
33 Correct 8 ms 384 KB Output is correct
34 Correct 12 ms 396 KB Output is correct
35 Correct 7 ms 336 KB Output is correct
36 Correct 3 ms 336 KB Output is correct
37 Correct 5 ms 336 KB Output is correct
38 Correct 7 ms 388 KB Output is correct
39 Correct 7 ms 336 KB Output is correct

Subtask #4
71.0 / 71.0

# Verdict Execution time Memory Grader output
1 Correct 294 ms 600 KB Output is correct
2 Correct 311 ms 664 KB Output is correct
3 Correct 326 ms 628 KB Output is correct
4 Correct 321 ms 684 KB Output is correct
5 Correct 318 ms 604 KB Output is correct
6 Correct 241 ms 684 KB Output is correct
7 Correct 393 ms 712 KB Output is correct
8 Correct 377 ms 708 KB Output is correct
9 Correct 332 ms 660 KB Output is correct
10 Correct 336 ms 712 KB Output is correct
11 Correct 342 ms 692 KB Output is correct
12 Correct 287 ms 736 KB Output is correct
13 Correct 251 ms 768 KB Output is correct
14 Correct 309 ms 632 KB Output is correct
15 Correct 292 ms 620 KB Output is correct
16 Correct 267 ms 836 KB Output is correct
17 Correct 339 ms 640 KB Output is correct
18 Correct 249 ms 696 KB Output is correct
19 Correct 265 ms 728 KB Output is correct
20 Correct 319 ms 692 KB Output is correct
21 Correct 322 ms 688 KB Output is correct
22 Correct 315 ms 696 KB Output is correct
23 Correct 255 ms 716 KB Output is correct
24 Correct 317 ms 704 KB Output is correct
25 Correct 364 ms 724 KB Output is correct
26 Correct 325 ms 692 KB Output is correct
27 Correct 360 ms 828 KB Output is correct
28 Correct 440 ms 628 KB Output is correct
29 Correct 368 ms 748 KB Output is correct
30 Correct 430 ms 644 KB Output is correct
31 Correct 509 ms 700 KB Output is correct
32 Correct 672 ms 724 KB Output is correct
33 Correct 420 ms 724 KB Output is correct
34 Correct 5 ms 336 KB Output is correct
35 Correct 3 ms 336 KB Output is correct
36 Correct 6 ms 376 KB Output is correct
37 Correct 4 ms 336 KB Output is correct
38 Correct 3 ms 336 KB Output is correct
39 Correct 5 ms 384 KB Output is correct
40 Correct 6 ms 388 KB Output is correct
41 Correct 9 ms 336 KB Output is correct
42 Correct 7 ms 348 KB Output is correct
43 Correct 4 ms 336 KB Output is correct
44 Correct 6 ms 336 KB Output is correct
45 Correct 7 ms 392 KB Output is correct
46 Correct 8 ms 388 KB Output is correct
47 Correct 1 ms 336 KB Output is correct
48 Correct 0 ms 336 KB Output is correct
49 Correct 1 ms 336 KB Output is correct
50 Correct 1 ms 336 KB Output is correct
51 Correct 1 ms 336 KB Output is correct
52 Correct 1 ms 336 KB Output is correct
53 Correct 1 ms 336 KB Output is correct
54 Correct 1 ms 336 KB Output is correct
55 Correct 1 ms 336 KB Output is correct
56 Correct 1 ms 336 KB Output is correct
57 Correct 1 ms 336 KB Output is correct
58 Correct 1 ms 336 KB Output is correct
59 Correct 0 ms 336 KB Output is correct
60 Correct 0 ms 336 KB Output is correct
61 Correct 0 ms 336 KB Output is correct
62 Correct 0 ms 336 KB Output is correct
63 Correct 0 ms 336 KB Output is correct
64 Correct 0 ms 336 KB Output is correct
65 Correct 1 ms 336 KB Output is correct
66 Correct 0 ms 336 KB Output is correct
67 Correct 0 ms 336 KB Output is correct
68 Correct 0 ms 336 KB Output is correct
69 Correct 0 ms 336 KB Output is correct
70 Correct 0 ms 336 KB Output is correct
71 Correct 0 ms 336 KB Output is correct
72 Correct 0 ms 336 KB Output is correct