Submission #1358271

#	Time	Username	Problem	Language	Result	Execution time	Memory
1358271		12345678	Longest Trip (IOI23_longesttrip)	C++17	15 / 100	3 ms	412 KiB

longesttrip

#include "longesttrip.h"
#include <bits/stdc++.h>

using namespace std;

std::vector<int> longest_trip(int N, int D)
{
    vector<int> d[2];
    d[0]={0}, d[1]={1};
    for (int i=2; i<N; i++)
    {
        if (are_connected(vector<int> {d[0].back()}, vector<int> {i})) d[0].push_back(i);
        else d[1].push_back(i);
    }
    if (are_connected(vector<int> {d[0].front()}, vector<int> {d[1].front()}))
    {
        reverse(d[0].begin(), d[0].end());
        for (auto x:d[1]) d[0].push_back(x);
        return d[0];
    }
    if (are_connected(vector<int> {d[0].front()}, vector<int> {d[1].back()}))
    {
        for (auto x:d[0]) d[1].push_back(x);
        return d[1];
    }
    if (are_connected(vector<int> {d[0].back()}, vector<int> {d[1].front()}))
    {
        for (auto x:d[1]) d[0].push_back(x);
        return d[0];
    }
    if (are_connected(vector<int> {d[0].back()}, vector<int> {d[1].back()}))
    {
        reverse(d[1].begin(), d[1].end());
        for (auto x:d[1]) d[0].push_back(x);
        return d[0];
    }
}

Compilation message (stderr)

longesttrip.cpp: In function 'std::vector<int> longest_trip(int, int)':
longesttrip.cpp:37:1: warning: control reaches end of non-void function [-Wreturn-type]
   37 | }
      | ^

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