oj.uz

Submission #814792

# Submission time Handle Problem Language Result Execution time Memory
814792 2023-08-08T10:01:17 Z LucaIlie Meetings (JOI19_meetings) C++17
29 / 100
 1537 ms 940 KB 
#include "meetings.h"
#include <bits/stdc++.h>

using namespace std;

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

void solve( int root, vector<int> &subtree ) {
    if ( subtree.size() == 0 )
        return;

    //random_shuffle( subtree.begin(), subtree.end() );
    unordered_map<int, vector<int>> newSubtrees;
    vector<int> path;

    int pivot = subtree[0];
    for ( int i = 1; i < subtree.size(); i++ ) {
        int ans = Query( root, pivot, subtree[i] );
        if ( ans == subtree[i] )
            path.push_back( subtree[i] );
        else
            newSubtrees[ans].push_back( subtree[i] );
    }

    for ( int i = 1; i < path.size(); i++ ) {
        int l = -1, r = i;
        while ( r - l > 1 ) {
            int mid = (l + r) / 2;
            if ( Query( root, path[mid], path[i] ) == path[mid] )
                l = mid;
            else
                r = mid;
        }
        for ( int j = i; j > r; j-- )
            swap( path[j], path[j - 1] );
    }


    if ( path.size() == 0 )
        bridge( root, pivot );
    else {
        bridge( root, path[0] );
        for ( int i = 0; i < path.size() - 1; i++ )
            bridge( path[i], path[i + 1] );
        bridge( path[path.size() - 1], pivot );
    }

    for ( auto &st: newSubtrees )
        solve( st.first, st.second );
}

void Solve( int n ) {
    int root = 0;
    vector<int> subtree;
    for ( int u = 1; u < n; u++ )
        subtree.push_back( u );
    solve( root, subtree );
}

Compilation message

meetings.cpp: In function 'void solve(int, std::vector<int>&)':
meetings.cpp:21:24: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   21 |     for ( int i = 1; i < subtree.size(); i++ ) {
      |                      ~~^~~~~~~~~~~~~~~~
meetings.cpp:29:24: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   29 |     for ( int i = 1; i < path.size(); i++ ) {
      |                      ~~^~~~~~~~~~~~~
meetings.cpp:47:28: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   47 |         for ( int i = 0; i < path.size() - 1; i++ )
      |                          ~~^~~~~~~~~~~~~~~~~

Subtask #1
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 336 KB Output is correct
2 Correct 1 ms 336 KB Output is correct
3 Correct 1 ms 336 KB Output is correct
4 Correct 1 ms 336 KB Output is correct
5 Correct 1 ms 336 KB Output is correct
6 Correct 1 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 1 ms 336 KB Output is correct
12 Correct 0 ms 336 KB Output is correct
13 Correct 1 ms 336 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 336 KB Output is correct
2 Correct 1 ms 336 KB Output is correct
3 Correct 1 ms 336 KB Output is correct
4 Correct 1 ms 336 KB Output is correct
5 Correct 1 ms 336 KB Output is correct
6 Correct 1 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 1 ms 336 KB Output is correct
12 Correct 0 ms 336 KB Output is correct
13 Correct 1 ms 336 KB Output is correct
14 Correct 0 ms 336 KB Output is correct
15 Correct 0 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 344 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 1 ms 336 KB Output is correct
24 Correct 1 ms 340 KB Output is correct
25 Correct 0 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 1 ms 336 KB Output is correct
2 Correct 1 ms 336 KB Output is correct
3 Correct 1 ms 336 KB Output is correct
4 Correct 1 ms 336 KB Output is correct
5 Correct 1 ms 336 KB Output is correct
6 Correct 1 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 1 ms 336 KB Output is correct
12 Correct 0 ms 336 KB Output is correct
13 Correct 1 ms 336 KB Output is correct
14 Correct 0 ms 336 KB Output is correct
15 Correct 0 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 344 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 1 ms 336 KB Output is correct
24 Correct 1 ms 340 KB Output is correct
25 Correct 0 ms 336 KB Output is correct
26 Correct 1 ms 336 KB Output is correct
27 Correct 4 ms 380 KB Output is correct
28 Correct 3 ms 336 KB Output is correct
29 Correct 4 ms 392 KB Output is correct
30 Correct 3 ms 368 KB Output is correct
31 Correct 3 ms 336 KB Output is correct
32 Correct 5 ms 472 KB Output is correct
33 Correct 10 ms 340 KB Output is correct
34 Correct 14 ms 388 KB Output is correct
35 Correct 15 ms 412 KB Output is correct
36 Correct 3 ms 336 KB Output is correct
37 Correct 4 ms 336 KB Output is correct
38 Correct 8 ms 336 KB Output is correct
39 Correct 109 ms 672 KB Output is correct

Subtask #4
0 / 71.0

# Verdict Execution time Memory Grader output
1 Correct 201 ms 560 KB Output is correct
2 Correct 226 ms 588 KB Output is correct
3 Correct 275 ms 588 KB Output is correct
4 Correct 410 ms 592 KB Output is correct
5 Correct 177 ms 572 KB Output is correct
6 Correct 203 ms 636 KB Output is correct
7 Correct 381 ms 612 KB Output is correct
8 Correct 451 ms 704 KB Output is correct
9 Correct 494 ms 616 KB Output is correct
10 Correct 409 ms 732 KB Output is correct
11 Correct 510 ms 688 KB Output is correct
12 Correct 233 ms 700 KB Output is correct
13 Correct 109 ms 608 KB Output is correct
14 Correct 336 ms 664 KB Output is correct
15 Correct 311 ms 592 KB Output is correct
16 Correct 286 ms 740 KB Output is correct
17 Correct 617 ms 632 KB Output is correct
18 Incorrect 1537 ms 940 KB Wrong Answer [2]
19 Halted 0 ms 0 KB -