oj.uz

Submission #243647

# Submission time Handle Problem Language Result Execution time Memory
243647 2020-07-01T13:07:26 Z osaaateiasavtnl Meetings (JOI19_meetings) C++14
29 / 100
 2000 ms 16504 KB 
#include "meetings.h"
#include<bits/stdc++.h>
using namespace std;
#define ii pair <int, int>
#define app push_back
#define all(a) a.begin(), a.end()
#define bp __builtin_popcountll
#define ll long long
#define mp make_pair
#define f first
#define s second
#define Time (double)clock()/CLOCKS_PER_SEC
#define debug(x) std::cout << #x << ": " << x << '\n';

const int N = 2007;

int par[N];
int link[N];

int mem[N][N];
int Query(int u, int v) {
    if (mem[u][v] != -1)
        return mem[u][v];
    return mem[u][v] = mem[v][u] = Query(0, u, v);
}   

bool used[N];

void Solve(int n) {

    memset(used, 0, sizeof used);

    for (int i = 0; i < N; ++i)
        for (int j = 0; j < N; ++j)
            mem[i][j] = -1;
                
    for (int i = 1; i < n; ++i)
        par[i] = -1;
          
    queue <int> q;
    q.push(0);
    while (q.size()) {
        int u = q.front(); q.pop();
        used[u] = 1;

        auto check = [&](int v) {
            for (int i = 0; i < n; ++i) {
                if (mem[i][v] == i && !used[i])
                    return 0;
            }   
            return 1;
        };   

        vector <int> cur;                                
        for (int v = 0; v < n; ++v) {
            if (par[v] == -1 && check(v)) {
                vector <bool> del(cur.size());
                bool ban = 0;
                for (int i = 0; i < cur.size(); ++i) {
                    int x = Query(v, cur[i]);
                    if (x == v) {
                        del[i] = 1;
                        link[cur[i]] = v;
                        continue;
                    }   
                    if (x == cur[i]) {
                        link[v] = cur[i];
                        ban = 1;
                        break;
                    }
                }   
                if (!ban) {
                    vector <int> a = {v};                    
                    link[v] = v;
                    for (int i = 0; i < cur.size(); ++i) {
                        if (!del[i])
                            a.app(cur[i]);
                    }
                    cur = a;
                }
            }
        }

        for (int i = 0; i < n; ++i)
            while (link[link[i]] != link[i])
                link[i] = link[link[i]];

        for (int v : cur) {
            par[v] = u;            
            q.push(v);
        }   
    }   

    for (int i = 1; i < n; ++i) {
        int u = i;
        int v = par[i];
        if (v < u)
            swap(u, v);

        #ifdef HOME
        cout << "edge " << u << ' ' << v << endl;
        #endif

        Bridge(u,v);
    }   
}

Compilation message

meetings.cpp: In function 'void Solve(int)':
meetings.cpp:59:35: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
                 for (int i = 0; i < cur.size(); ++i) {
                                 ~~^~~~~~~~~~~~
meetings.cpp:75:39: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
                     for (int i = 0; i < cur.size(); ++i) {
                                     ~~^~~~~~~~~~~~

Subtask #1
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 15 ms 16128 KB Output is correct
2 Correct 15 ms 16128 KB Output is correct
3 Correct 13 ms 16128 KB Output is correct
4 Correct 13 ms 16128 KB Output is correct
5 Correct 15 ms 16128 KB Output is correct
6 Correct 13 ms 16128 KB Output is correct
7 Correct 14 ms 16160 KB Output is correct
8 Correct 15 ms 16128 KB Output is correct
9 Correct 14 ms 16128 KB Output is correct
10 Correct 13 ms 16128 KB Output is correct
11 Correct 13 ms 16128 KB Output is correct
12 Correct 14 ms 16256 KB Output is correct
13 Correct 13 ms 16128 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 15 ms 16128 KB Output is correct
2 Correct 15 ms 16128 KB Output is correct
3 Correct 13 ms 16128 KB Output is correct
4 Correct 13 ms 16128 KB Output is correct
5 Correct 15 ms 16128 KB Output is correct
6 Correct 13 ms 16128 KB Output is correct
7 Correct 14 ms 16160 KB Output is correct
8 Correct 15 ms 16128 KB Output is correct
9 Correct 14 ms 16128 KB Output is correct
10 Correct 13 ms 16128 KB Output is correct
11 Correct 13 ms 16128 KB Output is correct
12 Correct 14 ms 16256 KB Output is correct
13 Correct 13 ms 16128 KB Output is correct
14 Correct 14 ms 16128 KB Output is correct
15 Correct 13 ms 16128 KB Output is correct
16 Correct 13 ms 16128 KB Output is correct
17 Correct 13 ms 16128 KB Output is correct
18 Correct 15 ms 16128 KB Output is correct
19 Correct 18 ms 16256 KB Output is correct
20 Correct 15 ms 16128 KB Output is correct
21 Correct 14 ms 16128 KB Output is correct
22 Correct 17 ms 16128 KB Output is correct
23 Correct 15 ms 16128 KB Output is correct
24 Correct 14 ms 16128 KB Output is correct
25 Correct 13 ms 16128 KB Output is correct
26 Correct 15 ms 16128 KB Output is correct

Subtask #3
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 15 ms 16128 KB Output is correct
2 Correct 15 ms 16128 KB Output is correct
3 Correct 13 ms 16128 KB Output is correct
4 Correct 13 ms 16128 KB Output is correct
5 Correct 15 ms 16128 KB Output is correct
6 Correct 13 ms 16128 KB Output is correct
7 Correct 14 ms 16160 KB Output is correct
8 Correct 15 ms 16128 KB Output is correct
9 Correct 14 ms 16128 KB Output is correct
10 Correct 13 ms 16128 KB Output is correct
11 Correct 13 ms 16128 KB Output is correct
12 Correct 14 ms 16256 KB Output is correct
13 Correct 13 ms 16128 KB Output is correct
14 Correct 14 ms 16128 KB Output is correct
15 Correct 13 ms 16128 KB Output is correct
16 Correct 13 ms 16128 KB Output is correct
17 Correct 13 ms 16128 KB Output is correct
18 Correct 15 ms 16128 KB Output is correct
19 Correct 18 ms 16256 KB Output is correct
20 Correct 15 ms 16128 KB Output is correct
21 Correct 14 ms 16128 KB Output is correct
22 Correct 17 ms 16128 KB Output is correct
23 Correct 15 ms 16128 KB Output is correct
24 Correct 14 ms 16128 KB Output is correct
25 Correct 13 ms 16128 KB Output is correct
26 Correct 15 ms 16128 KB Output is correct
27 Correct 44 ms 16256 KB Output is correct
28 Correct 44 ms 16224 KB Output is correct
29 Correct 40 ms 16128 KB Output is correct
30 Correct 44 ms 16376 KB Output is correct
31 Correct 39 ms 16128 KB Output is correct
32 Correct 71 ms 16252 KB Output is correct
33 Correct 57 ms 16232 KB Output is correct
34 Correct 65 ms 16256 KB Output is correct
35 Correct 60 ms 16128 KB Output is correct
36 Correct 33 ms 16128 KB Output is correct
37 Correct 74 ms 16252 KB Output is correct
38 Correct 102 ms 16248 KB Output is correct
39 Correct 269 ms 16248 KB Output is correct

Subtask #4
0 / 71.0

# Verdict Execution time Memory Grader output
1 Execution timed out 3074 ms 16504 KB Time limit exceeded
2 Halted 0 ms 0 KB -