oj.uz

Submission #344325

# Submission time Handle Problem Language Result Execution time Memory
344325 2021-01-05T13:40:13 Z milleniumEeee Meetings (JOI19_meetings) C++17
100 / 100
 716 ms 1004 KB 
 #include "meetings.h"
//#include "grader.cpp"
#include <bits/stdc++.h>
#define pii pair<int, int>
#define fr first
#define sc second
#define szof(s) (int)s.size()
#define all(s) s.begin(), s.end()
#define mk make_pair
using namespace std;

const int MAXN = 2003; // дерево индексация с 0...n-1
vector <pair<int, int>> ans; // u < v
int n;

mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());

int get_rand() {
  int x = rng();
  if (x < 0) {
    x = -x;
  }
  return x;
};

int gen(int l, int r) {
  return l + get_rand() % (r - l + 1);
}

void print(int u, int v) {
  if (u > v) {
    swap(u, v);
  }
  Bridge(u, v);
}

void calc(vector<int> &graph) {
  int root = -1, son = -1;
  while (root == son) {
    root = graph[gen(0, szof(graph) - 1)];
    son = graph[gen(0, szof(graph) - 1)];
  }
  // a = root
  // b = child
  set <int> st;
  vector <int> bambook;
  map <int, vector<int>> sub;
  for (int vertex : graph) {
    if (vertex == root || vertex == son) {
      continue;
    }
    int lca = Query(root, son, vertex);      
    st.insert(lca);
    sub[lca].push_back(vertex);
  }
  st.erase(son);
  st.erase(root);
  for (int el : st) {
    bambook.push_back(el);
  }
  sort(all(bambook), [&](int A, int B) {
    int lca = Query(root, A, B);
    return (A == lca);
  });
  bambook.insert(bambook.begin(), root);
  bambook.push_back(son);
  for (int i = 0; i + 1 < szof(bambook); i++) {
    print(bambook[i], bambook[i + 1]);
  }
  sub[root].push_back(root);
  sub[son].push_back(son);
  for (auto el : sub) {
    if (szof(el.second) > 1) {
      calc(el.second);
    }
  }
}

void Solve(int nn) {
  n = nn;
  vector<int> graph;
  for (int i = 0; i < n; i++) {
    graph.push_back(i);
  }
  calc(graph);
}

/*
5
0 1
1 2
2 3
3 4
*/

Subtask #1
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 492 KB Output is correct
2 Correct 0 ms 364 KB Output is correct
3 Correct 0 ms 364 KB Output is correct
4 Correct 0 ms 364 KB Output is correct
5 Correct 0 ms 364 KB Output is correct
6 Correct 0 ms 364 KB Output is correct
7 Correct 1 ms 364 KB Output is correct
8 Correct 1 ms 364 KB Output is correct
9 Correct 1 ms 364 KB Output is correct
10 Correct 1 ms 364 KB Output is correct
11 Correct 0 ms 364 KB Output is correct
12 Correct 0 ms 364 KB Output is correct
13 Correct 0 ms 364 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 492 KB Output is correct
2 Correct 0 ms 364 KB Output is correct
3 Correct 0 ms 364 KB Output is correct
4 Correct 0 ms 364 KB Output is correct
5 Correct 0 ms 364 KB Output is correct
6 Correct 0 ms 364 KB Output is correct
7 Correct 1 ms 364 KB Output is correct
8 Correct 1 ms 364 KB Output is correct
9 Correct 1 ms 364 KB Output is correct
10 Correct 1 ms 364 KB Output is correct
11 Correct 0 ms 364 KB Output is correct
12 Correct 0 ms 364 KB Output is correct
13 Correct 0 ms 364 KB Output is correct
14 Correct 1 ms 364 KB Output is correct
15 Correct 1 ms 384 KB Output is correct
16 Correct 1 ms 364 KB Output is correct
17 Correct 1 ms 364 KB Output is correct
18 Correct 1 ms 364 KB Output is correct
19 Correct 1 ms 364 KB Output is correct
20 Correct 1 ms 364 KB Output is correct
21 Correct 1 ms 364 KB Output is correct
22 Correct 1 ms 364 KB Output is correct
23 Correct 1 ms 364 KB Output is correct
24 Correct 1 ms 364 KB Output is correct
25 Correct 1 ms 364 KB Output is correct
26 Correct 1 ms 364 KB Output is correct

Subtask #3
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 492 KB Output is correct
2 Correct 0 ms 364 KB Output is correct
3 Correct 0 ms 364 KB Output is correct
4 Correct 0 ms 364 KB Output is correct
5 Correct 0 ms 364 KB Output is correct
6 Correct 0 ms 364 KB Output is correct
7 Correct 1 ms 364 KB Output is correct
8 Correct 1 ms 364 KB Output is correct
9 Correct 1 ms 364 KB Output is correct
10 Correct 1 ms 364 KB Output is correct
11 Correct 0 ms 364 KB Output is correct
12 Correct 0 ms 364 KB Output is correct
13 Correct 0 ms 364 KB Output is correct
14 Correct 1 ms 364 KB Output is correct
15 Correct 1 ms 384 KB Output is correct
16 Correct 1 ms 364 KB Output is correct
17 Correct 1 ms 364 KB Output is correct
18 Correct 1 ms 364 KB Output is correct
19 Correct 1 ms 364 KB Output is correct
20 Correct 1 ms 364 KB Output is correct
21 Correct 1 ms 364 KB Output is correct
22 Correct 1 ms 364 KB Output is correct
23 Correct 1 ms 364 KB Output is correct
24 Correct 1 ms 364 KB Output is correct
25 Correct 1 ms 364 KB Output is correct
26 Correct 1 ms 364 KB Output is correct
27 Correct 6 ms 364 KB Output is correct
28 Correct 5 ms 364 KB Output is correct
29 Correct 6 ms 364 KB Output is correct
30 Correct 6 ms 364 KB Output is correct
31 Correct 5 ms 364 KB Output is correct
32 Correct 9 ms 364 KB Output is correct
33 Correct 10 ms 492 KB Output is correct
34 Correct 11 ms 512 KB Output is correct
35 Correct 9 ms 364 KB Output is correct
36 Correct 5 ms 364 KB Output is correct
37 Correct 9 ms 492 KB Output is correct
38 Correct 15 ms 492 KB Output is correct
39 Correct 8 ms 492 KB Output is correct

Subtask #4
71.0 / 71.0

# Verdict Execution time Memory Grader output
1 Correct 399 ms 748 KB Output is correct
2 Correct 514 ms 748 KB Output is correct
3 Correct 631 ms 748 KB Output is correct
4 Correct 573 ms 668 KB Output is correct
5 Correct 354 ms 620 KB Output is correct
6 Correct 400 ms 876 KB Output is correct
7 Correct 472 ms 780 KB Output is correct
8 Correct 568 ms 896 KB Output is correct
9 Correct 542 ms 884 KB Output is correct
10 Correct 506 ms 848 KB Output is correct
11 Correct 560 ms 1004 KB Output is correct
12 Correct 483 ms 896 KB Output is correct
13 Correct 257 ms 748 KB Output is correct
14 Correct 415 ms 876 KB Output is correct
15 Correct 347 ms 748 KB Output is correct
16 Correct 291 ms 1004 KB Output is correct
17 Correct 468 ms 748 KB Output is correct
18 Correct 320 ms 748 KB Output is correct
19 Correct 386 ms 748 KB Output is correct
20 Correct 404 ms 748 KB Output is correct
21 Correct 455 ms 876 KB Output is correct
22 Correct 363 ms 748 KB Output is correct
23 Correct 455 ms 748 KB Output is correct
24 Correct 466 ms 748 KB Output is correct
25 Correct 397 ms 748 KB Output is correct
26 Correct 346 ms 620 KB Output is correct
27 Correct 397 ms 876 KB Output is correct
28 Correct 594 ms 880 KB Output is correct
29 Correct 468 ms 780 KB Output is correct
30 Correct 497 ms 748 KB Output is correct
31 Correct 518 ms 748 KB Output is correct
32 Correct 716 ms 992 KB Output is correct
33 Correct 416 ms 968 KB Output is correct
34 Correct 6 ms 364 KB Output is correct
35 Correct 5 ms 364 KB Output is correct
36 Correct 6 ms 364 KB Output is correct
37 Correct 6 ms 364 KB Output is correct
38 Correct 5 ms 364 KB Output is correct
39 Correct 7 ms 364 KB Output is correct
40 Correct 9 ms 364 KB Output is correct
41 Correct 13 ms 364 KB Output is correct
42 Correct 10 ms 364 KB Output is correct
43 Correct 5 ms 364 KB Output is correct
44 Correct 7 ms 492 KB Output is correct
45 Correct 9 ms 492 KB Output is correct
46 Correct 8 ms 492 KB Output is correct
47 Correct 1 ms 396 KB Output is correct
48 Correct 1 ms 364 KB Output is correct
49 Correct 1 ms 364 KB Output is correct
50 Correct 1 ms 364 KB Output is correct
51 Correct 1 ms 364 KB Output is correct
52 Correct 1 ms 364 KB Output is correct
53 Correct 1 ms 364 KB Output is correct
54 Correct 1 ms 364 KB Output is correct
55 Correct 1 ms 364 KB Output is correct
56 Correct 1 ms 364 KB Output is correct
57 Correct 1 ms 364 KB Output is correct
58 Correct 1 ms 364 KB Output is correct
59 Correct 1 ms 364 KB Output is correct
60 Correct 1 ms 364 KB Output is correct
61 Correct 1 ms 364 KB Output is correct
62 Correct 0 ms 364 KB Output is correct
63 Correct 1 ms 364 KB Output is correct
64 Correct 0 ms 364 KB Output is correct
65 Correct 0 ms 364 KB Output is correct
66 Correct 0 ms 364 KB Output is correct
67 Correct 1 ms 364 KB Output is correct
68 Correct 1 ms 364 KB Output is correct
69 Correct 0 ms 364 KB Output is correct
70 Correct 1 ms 364 KB Output is correct
71 Correct 1 ms 364 KB Output is correct
72 Correct 1 ms 364 KB Output is correct