제출 #841488

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
841488		flashmt	Longest Trip (IOI23_longesttrip)	C++17	0 / 100	2 ms	464 KiB

longesttrip

#include <bits/stdc++.h>
#include "longesttrip.h"
using namespace std;

vector<int> longest_trip(int n, int d)
{
  vector<vector<int>> a(n, vector<int>(n));
  for (int i = 0; i < n; i++)
    for (int j = i + 1; j < n; j++)
      a[i][j] = a[j][i] = are_connected({i}, {j});

  for (int i = 0; i < n; i++)
    for (int j = 0; j < n; j++)
      for (int k = 0; k < n; k++)
        if (a[i][j] && a[j][k])
        {
          deque<int> q;
          q.push_back(i);
          q.push_back(j);
          q.push_back(k);
          for (int p = 0; p < n; p++)
            if (p != i && p != j && p != k)
            {
              if (a[p][q.back()]) q.push_back(p);
              else
              {
                assert(a[p][q.front()]);
                q.push_front(p);
              }
            }

          vector<int> ans;
          while (!empty(q))
          {
            ans.push_back(q.front());
            q.pop_front();
          }
          assert(size(ans) == n);
          return ans;
        }

  for (int i = 0; i < n; i++)
    for (int j = i + 1; j < n; j++)
      if (a[i][j])
      {
        return {i, j};
      }

  assert(0);
  return {};
}

컴파일 시 표준 에러 (stderr) 메시지

In file included from /usr/include/c++/10/cassert:44,
                 from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:33,
                 from longesttrip.cpp:1:
longesttrip.cpp: In function 'std::vector<int> longest_trip(int, int)':
longesttrip.cpp:38:28: warning: comparison of integer expressions of different signedness: 'std::vector<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   38 |           assert(size(ans) == n);
      |                  ~~~~~~~~~~^~~~

• Subtask 0: 0 / 0
• Subtask 1: 0 / 5
• Subtask 2: 0 / 10
• Subtask 3: 0 / 25
• Subtask 4: 0 / 60