oj.uz

Submission #861624

# Submission time Handle Problem Language Result Execution time Memory
861624 2023-10-16T15:11:49 Z faustaadp Longest Trip (IOI23_longesttrip) C++17
0 / 100
 1000 ms 4548 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;
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";
    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] = 1;
    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)
{
    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])
        {
            now = 0;
            dfs2(i);
        }
    for(ll i = 0; i < N; i++)
    {
        b[i] = 0;
    }
    for(ll i = 0; i < N; i++)
        if(!b[i])
        {
            now = 0;
            dfs2(i);
            if(now == mxx)
            {
                 for(ll j = 0; j < N; j++)
                    {
                        b[j] = 0;
                    }
                dfs(i);
                return ret;
            }
        }
    // return ret;
    // 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:17:23: 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]
   17 |     if(ret.size() * 2 >= mxx)ada = 1;
      |        ~~~~~~~~~~~~~~~^~~~~~
longesttrip.cpp:20:21: 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]
   20 |     for(ll i = 0; i < v[pos].size(); i++)
      |                   ~~^~~~~~~~~~~~~~~
longesttrip.cpp: In function 'void dfs2(ll)':
longesttrip.cpp:34:21: 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]
   34 |     for(ll i = 0; i < v[pos].size(); i++)
      |                   ~~^~~~~~~~~~~~~~~
longesttrip.cpp: In function 'std::vector<int> longest_trip(int, int)':
longesttrip.cpp:110:1: warning: control reaches end of non-void function [-Wreturn-type]
  110 | }
      | ^

Subtask #0
0.0 / 0.0

# Verdict Execution time Memory Grader output
1 Incorrect 1 ms 2648 KB Incorrect
2 Halted 0 ms 0 KB -

Subtask #1
0.0 / 5.0

# Verdict Execution time Memory Grader output
1 Incorrect 1 ms 2904 KB Incorrect
2 Halted 0 ms 0 KB -

Subtask #2
0.0 / 10.0

# Verdict Execution time Memory Grader output
1 Incorrect 1 ms 2648 KB Incorrect
2 Halted 0 ms 0 KB -

Subtask #3
0.0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 8 ms 2648 KB Output is correct
2 Correct 27 ms 2648 KB Output is correct
3 Correct 121 ms 2900 KB Output is correct
4 Correct 328 ms 3388 KB Output is correct
5 Correct 781 ms 3928 KB Output is correct
6 Correct 7 ms 2648 KB Output is correct
7 Correct 21 ms 2648 KB Output is correct
8 Correct 116 ms 2904 KB Output is correct
9 Correct 276 ms 3416 KB Output is correct
10 Correct 741 ms 4008 KB Output is correct
11 Correct 721 ms 4260 KB Output is correct
12 Correct 702 ms 3908 KB Output is correct
13 Correct 737 ms 4288 KB Output is correct
14 Correct 7 ms 2648 KB Output is correct
15 Correct 10 ms 2648 KB Output is correct
16 Correct 35 ms 2904 KB Output is correct
17 Correct 68 ms 2904 KB Output is correct
18 Correct 119 ms 3160 KB Output is correct
19 Correct 256 ms 3416 KB Output is correct
20 Correct 248 ms 3420 KB Output is correct
21 Correct 725 ms 4420 KB Output is correct
22 Correct 748 ms 4260 KB Output is correct
23 Correct 734 ms 4548 KB Output is correct
24 Correct 698 ms 4252 KB Output is correct
25 Correct 8 ms 2644 KB Output is correct
26 Correct 10 ms 2648 KB Output is correct
27 Correct 21 ms 2648 KB Output is correct
28 Correct 20 ms 2648 KB Output is correct
29 Correct 22 ms 2648 KB Output is correct
30 Correct 148 ms 3564 KB Output is correct
31 Correct 159 ms 3576 KB Output is correct
32 Correct 154 ms 3048 KB Output is correct
33 Correct 228 ms 3848 KB Output is correct
34 Correct 258 ms 3672 KB Output is correct
35 Correct 242 ms 3408 KB Output is correct
36 Correct 741 ms 3596 KB Output is correct
37 Correct 733 ms 4104 KB Output is correct
38 Correct 764 ms 3908 KB Output is correct
39 Correct 678 ms 4328 KB Output is correct
40 Correct 742 ms 4360 KB Output is correct
41 Correct 715 ms 3808 KB Output is correct
42 Correct 745 ms 3608 KB Output is correct
43 Correct 700 ms 4500 KB Output is correct
44 Correct 713 ms 4064 KB Output is correct
45 Correct 11 ms 2648 KB Output is correct
46 Correct 10 ms 2648 KB Output is correct
47 Correct 23 ms 2904 KB Output is correct
48 Correct 25 ms 2648 KB Output is correct
49 Correct 21 ms 2904 KB Output is correct
50 Correct 169 ms 3304 KB Output is correct
51 Execution timed out 2264 ms 3560 KB Time limit exceeded
52 Halted 0 ms 0 KB -

Subtask #4
0.0 / 60.0

# Verdict Execution time Memory Grader output
1 Incorrect 1 ms 2648 KB Incorrect
2 Halted 0 ms 0 KB -