oj.uz

Submission #841555

# Submission time Handle Problem Language Result Execution time Memory
841555 2023-09-01T16:49:26 Z Stavab Longest Trip (IOI23_longesttrip) C++17
0 / 100
 23 ms 352 KB 
#include "longesttrip.h"
#include <algorithm>

std::vector<std::vector<int>> graph;
std::vector<int> solution, visited, temp;

void dfs(int n)
{
    if(visited[n]) return;

    visited[n] = 1;
    temp.push_back(n);
    for(int i = 0; i < graph[n].size(); i++)
        dfs(graph[n][i]);

    if(temp.size() > solution.size())
        solution = temp;

    temp.pop_back();
}

std::vector<int> longest_trip(int N, int D)
{
    graph.assign(N, std::vector<int>());
    for(int i = 0; i < N; i++)
    {
        for(int j = i + 1; j < N; j++)
        {
            if(are_connected({i}, {j}))
            {
                graph[i].push_back(j);
                graph[j].push_back(i);
            }
        }
    }

    visited.assign(N, 0);
    for(int i = 0; i < N; i++)
    {
        for(int j = 0; j < N; j++)
            visited[j] = 0;
        dfs(i);
    }

    return solution;
}

Compilation message

longesttrip.cpp: In function 'void dfs(int)':
longesttrip.cpp:13:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   13 |     for(int i = 0; i < graph[n].size(); i++)
      |                    ~~^~~~~~~~~~~~~~~~~

Subtask #0
0.0 / 0.0

# Verdict Execution time Memory Grader output
1 Incorrect 1 ms 344 KB Incorrect
2 Halted 0 ms 0 KB -

Subtask #1
0.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 8 ms 352 KB Output is correct
2 Incorrect 22 ms 344 KB Incorrect
3 Halted 0 ms 0 KB -

Subtask #2
0.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 344 KB Output is correct
2 Incorrect 21 ms 344 KB Incorrect
3 Halted 0 ms 0 KB -

Subtask #3
0.0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 344 KB Output is correct
2 Incorrect 23 ms 344 KB Incorrect
3 Halted 0 ms 0 KB -

Subtask #4
0.0 / 60.0

# Verdict Execution time Memory Grader output
1 Correct 9 ms 344 KB Output is correct
2 Incorrect 20 ms 344 KB Incorrect
3 Halted 0 ms 0 KB -