oj.uz

Submission #861633

# Submission time Handle Problem Language Result Execution time Memory
861633 2023-10-16T15:24:19 Z faustaadp Longest Trip (IOI23_longesttrip) C++17
0 / 100
 727 ms 5184 KB 
#include "longesttrip.h"
#include<bits/stdc++.h>
typedef long long ll;
using namespace std;
#define pb push_back
const ll NN = 1e5 + 5;
vector<int> ret, ret2;
ll b[NN], n, ada = 0, mxx, now, coba = 0, ti;
vector<ll> v[NN];
void dfs(ll pos)
{
    if(ada)return ;
    b[pos] = 1;
    ret.pb(pos);
    // cout << pos << " mas " << ret.size() << "_\n";
    // cout << ret.size() << " dan " << mxx << "\n";
    coba++;
    if(ret2.size() < ret.size())ret2 = ret;
    if(coba >= 100000)ada = 2;
    if(ret.size() * 2 >= mxx)ada = 1;
    if(ada)return;
    // random_shuffle(v[pos].begin(), v[pos].end());
    for(ll i = 0; i < v[pos].size(); i++)
    {
        if(b[v[pos][i]] == 0)dfs(v[pos][i]);
        if(ada)return ;
    }
    b[pos] = 0;
    // cout << pos << " kel\n";
    ret.pop_back();
}
void dfs2(ll pos)
{
    now++;
    mxx = max(mxx, now);
    b[pos] = ti;
    for(ll i = 0; i < v[pos].size(); i++)
        if(b[v[pos][i]] == 0)
            dfs2(v[pos][i]);
}
std::vector<int> longest_trip(int N, int D)
{
    ret2.clear();
    mxx = 0;
    ada = 0;
    n = N;
    ret.clear();
    for(ll i = 0; i < N; i++)
    {
        v[i].clear();
        b[i] = 0;
    }
    for(ll i = 0; i < N; i++)
        for(ll j = i + 1; j < N; j++)
        {
            vector<int> A;A.pb(i);
            vector<int> B;B.pb(j);
            bool isi = are_connected(A, B);
            if(isi)
            {
                // cout << i << "--" << j << "\n";
                v[i].pb(j);
                v[j].pb(i);
            }
        }
    for(ll i = 0; i < N; i++)
        if(!b[i])
        {
            ti++;
            now = 0;
            dfs2(i);
        }
    for(ll i = 0; i < N; i++)
    {
        b[i] = 0;
    }
    ti = 1;
    vector<ll> cal;
    for(ll i = 0; i < N; i++)
        if(!b[i])
        {
            ti++;
            now = 0;
            dfs2(i);
            if(now != mxx)
                continue;
            for(ll j = 0; j < N; j++)
            {
                if(b[j] == ti)
                    cal.pb(j);
            }
            break;
        }
    memset(b, 0, sizeof(b));
    for(auto aa : cal)
    {
        dfs(aa);
        if(ada == 2)
            ada = 0;
    }
    return ret2;
    // ll mul = 1;
    // if(N % 2 == 0)
    // {
    //     vector<int> A;A.pb(0);
    //     vector<int> B;B.pb(1);
    //     bool isi = are_connected(A, B);
    //     if(!isi)
    //         swap(cal[1], cal[2]);
    //     ret.pb(cal[0]);
    //     ret.pb(cal[1]);
    // }
    // else
    //     ret.pb(cal[0]);
    // for(ll i = mul; i + 1 < N; i += 2)
    // {
    //     ll now = ret.back();
    //     vector<int> A;A.pb(now);
    //     vector<int> B;A.pb(cal[i]);
    //     bool isi = are_connected(A, B);
    //     if()
    // }
    // return ret;
}

Compilation message

longesttrip.cpp: In function 'void dfs(ll)':
longesttrip.cpp:20:23: warning: comparison of integer expressions of different signedness: 'std::vector<int>::size_type' {aka 'long unsigned int'} and 'll' {aka 'long long int'} [-Wsign-compare]
   20 |     if(ret.size() * 2 >= mxx)ada = 1;
      |        ~~~~~~~~~~~~~~~^~~~~~
longesttrip.cpp:23:21: warning: comparison of integer expressions of different signedness: 'll' {aka 'long long int'} and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   23 |     for(ll i = 0; i < v[pos].size(); i++)
      |                   ~~^~~~~~~~~~~~~~~
longesttrip.cpp: In function 'void dfs2(ll)':
longesttrip.cpp:37:21: warning: comparison of integer expressions of different signedness: 'll' {aka 'long long int'} and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   37 |     for(ll i = 0; i < v[pos].size(); i++)
      |                   ~~^~~~~~~~~~~~~~~

Subtask #0
0.0 / 0.0

# Verdict Execution time Memory Grader output
1 Incorrect 1 ms 3416 KB Incorrect
2 Halted 0 ms 0 KB -

Subtask #1
0.0 / 5.0

# Verdict Execution time Memory Grader output
1 Incorrect 1 ms 3416 KB Incorrect
2 Halted 0 ms 0 KB -

Subtask #2
0.0 / 10.0

# Verdict Execution time Memory Grader output
1 Incorrect 1 ms 3668 KB Incorrect
2 Halted 0 ms 0 KB -

Subtask #3
0.0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 13 ms 3416 KB Output is correct
2 Correct 22 ms 3416 KB Output is correct
3 Correct 130 ms 3672 KB Output is correct
4 Correct 347 ms 4208 KB Output is correct
5 Correct 687 ms 4724 KB Output is correct
6 Correct 13 ms 3416 KB Output is correct
7 Correct 22 ms 3416 KB Output is correct
8 Correct 123 ms 3928 KB Output is correct
9 Correct 270 ms 4340 KB Output is correct
10 Correct 678 ms 4376 KB Output is correct
11 Correct 688 ms 4472 KB Output is correct
12 Correct 713 ms 4708 KB Output is correct
13 Correct 724 ms 4352 KB Output is correct
14 Correct 14 ms 3416 KB Output is correct
15 Correct 14 ms 3416 KB Output is correct
16 Correct 38 ms 3564 KB Output is correct
17 Correct 64 ms 3672 KB Output is correct
18 Correct 120 ms 4184 KB Output is correct
19 Correct 239 ms 4180 KB Output is correct
20 Correct 247 ms 4848 KB Output is correct
21 Correct 727 ms 4972 KB Output is correct
22 Correct 660 ms 4396 KB Output is correct
23 Correct 713 ms 4432 KB Output is correct
24 Correct 705 ms 4812 KB Output is correct
25 Correct 13 ms 3416 KB Output is correct
26 Correct 13 ms 3416 KB Output is correct
27 Correct 28 ms 3416 KB Output is correct
28 Correct 26 ms 3416 KB Output is correct
29 Correct 27 ms 3416 KB Output is correct
30 Correct 149 ms 4596 KB Output is correct
31 Correct 159 ms 4076 KB Output is correct
32 Correct 156 ms 4072 KB Output is correct
33 Correct 221 ms 3664 KB Output is correct
34 Correct 257 ms 3880 KB Output is correct
35 Correct 245 ms 3948 KB Output is correct
36 Correct 672 ms 4580 KB Output is correct
37 Correct 684 ms 4748 KB Output is correct
38 Correct 693 ms 5184 KB Output is correct
39 Correct 685 ms 5120 KB Output is correct
40 Correct 677 ms 5092 KB Output is correct
41 Correct 704 ms 4992 KB Output is correct
42 Correct 665 ms 4304 KB Output is correct
43 Correct 665 ms 5176 KB Output is correct
44 Correct 692 ms 5080 KB Output is correct
45 Correct 20 ms 3416 KB Output is correct
46 Correct 14 ms 3416 KB Output is correct
47 Correct 24 ms 3572 KB Output is correct
48 Correct 27 ms 3568 KB Output is correct
49 Correct 24 ms 3416 KB Output is correct
50 Correct 185 ms 3844 KB Output is correct
51 Incorrect 13 ms 4332 KB Incorrect
52 Halted 0 ms 0 KB -

Subtask #4
0.0 / 60.0

# Verdict Execution time Memory Grader output
1 Incorrect 1 ms 3672 KB Incorrect
2 Halted 0 ms 0 KB -