oj.uz

Submission #861620

# Submission time Handle Problem Language Result Execution time Memory
861620 2023-10-16T15:08:15 Z faustaadp Longest Trip (IOI23_longesttrip) C++17
0 / 100
 1000 ms 4400 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;
    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);
        }
    // cout << mxx << "_\n";
    for(ll i = 0; i < N; i++)
    {
        b[i] = 0;
    }
    for(ll i = 0; i < N; i++)
        dfs(i);
    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:19:21: 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]
   19 |     for(ll i = 0; i < v[pos].size(); i++)
      |                   ~~^~~~~~~~~~~~~~~
longesttrip.cpp: In function 'void dfs2(ll)':
longesttrip.cpp:33:21: 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]
   33 |     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 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 2648 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 7 ms 2648 KB Output is correct
2 Correct 23 ms 2648 KB Output is correct
3 Correct 121 ms 3072 KB Output is correct
4 Correct 358 ms 3412 KB Output is correct
5 Correct 690 ms 4332 KB Output is correct
6 Correct 8 ms 2648 KB Output is correct
7 Correct 23 ms 2648 KB Output is correct
8 Correct 113 ms 2904 KB Output is correct
9 Correct 266 ms 3928 KB Output is correct
10 Correct 683 ms 4140 KB Output is correct
11 Correct 745 ms 4400 KB Output is correct
12 Correct 761 ms 4244 KB Output is correct
13 Correct 721 ms 4152 KB Output is correct
14 Correct 7 ms 2648 KB Output is correct
15 Correct 13 ms 2648 KB Output is correct
16 Correct 41 ms 2648 KB Output is correct
17 Correct 79 ms 3160 KB Output is correct
18 Correct 118 ms 2932 KB Output is correct
19 Correct 267 ms 3588 KB Output is correct
20 Correct 251 ms 3588 KB Output is correct
21 Correct 668 ms 4304 KB Output is correct
22 Correct 694 ms 3876 KB Output is correct
23 Correct 704 ms 4236 KB Output is correct
24 Correct 752 ms 4132 KB Output is correct
25 Correct 11 ms 2648 KB Output is correct
26 Correct 9 ms 2648 KB Output is correct
27 Correct 22 ms 2648 KB Output is correct
28 Correct 31 ms 2648 KB Output is correct
29 Correct 24 ms 2648 KB Output is correct
30 Correct 180 ms 3308 KB Output is correct
31 Execution timed out 3006 ms 3064 KB Time limit exceeded
32 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 -