제출 #854269

#제출 시각아이디문제언어결과실행 시간메모리
854269Ludissey가장 긴 여행 (IOI23_longesttrip)C++17
5 / 100
3033 ms756 KiB
#include <bits/stdc++.h>
#include "longesttrip.h"
using namespace std;

std::vector<int> longest_trip(int n, int d)
{
    vector<int> A;
    vector<int> B;
    A.push_back(0);
    for (int i = 1; i < n; i++)
    {
        if(are_connected({i}, {A.back()})) A.push_back(i);
        else if(B.size()==0 || are_connected({i}, {B.back()})) B.push_back(i);
        else {
            for (int x = B.size()-1; x >= 0; x--) A.push_back(B[x]);
            B.clear();
        }
    }
    if(A.size()<B.size()) swap(A,B);
    if(!are_connected({A[0]}, {A.back()})) while(true) { }; 
    return A;
}
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