Submission #839725

#	Time	Username	Problem	Language	Result	Execution time	Memory
839725		model_code	Longest Trip (IOI23_longesttrip)	C++17	25 / 100	20 ms	292 KiB

longesttrip

// correct/sol_birka0_st3.cpp

#include "longesttrip.h"

using namespace std;

vector<int> longest_trip(int N, int /*D*/)
{
    vector<int> t1 = {0}, t2 = {1};
    for (int i = 2; i < N; ++i)
    {
        if (t2.empty())
        {
            t2 = {i};
            continue;
        }
        bool add1 = are_connected({t1.back()}, {i});
        bool add2 = are_connected({t2.back()}, {i});
        if (add1 && add2)
        {
            t1.push_back(i);
            while (!t2.empty())
            {
                t1.push_back(t2.back());
                t2.pop_back();
            }
        }
        else if (add1)
        {
            t1.push_back(i);
        }
        else if (add2)
        {
            t2.push_back(i);
        }
        else
        {
            while (!t2.empty())
            {
                t1.push_back(t2.back());
                t2.pop_back();
            }
            t2 = {i};
        }
    }

    return t1.size() > t2.size() ? t1 : t2;
}

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