Submission #839840

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
839840	2023-08-30 18:30:20	Enchom	Longest Trip (IOI23_longesttrip)	C++17	100 / 100	17 ms	468 KiB

longesttrip

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#include "longesttrip.h"
#include <random>
#include <algorithm>
using namespace std;
vector<int> longest_trip(int N, int /*D*/)
{
    srand(time(0));
    std::vector<int> ids(N);
    for (int i = 0; i < N; i++)
        ids[i] = i;
    random_shuffle(ids.begin(), ids.end());
    vector<int> t1 = {ids[0]}, t2;
    for (int j = 1; j < N; ++j)
    {
        int i = ids[j];
        if (are_connected({t1.back()}, {i}))
        {
            t1.push_back(i);
        }
        else
        {
            if (t2.empty())
            {
                t2 = t1;
                t1 = {i};
            }
 
 
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• Subtask 0: 0 / 0
• Subtask 1: 5 / 5
• Subtask 2: 10 / 10
• Subtask 3: 25 / 25
• Subtask 4: 60 / 60