Submission #993207

#	Time	Username	Problem	Language	Result	Execution time	Memory
993207		stdfloat	Longest Trip (IOI23_longesttrip)	C++17	0 / 100	3031 ms	344 KiB

longesttrip

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

mt19937 rng(chrono::steady_clock::now().time_since_epoch().count()); //mt19937_64 for ll

int rnd(int l, int r) {
    return l + rng() % (r - l + 1);
}

vector<int> longest_trip(int n, int D) {
    vector<int> v = {rnd(0, n - 1)};
    vector<bool> vis(n); vis[v[0]] = true;
    while ((int)v.size() <= ((n + 1) >> 1)) {
        bool tr = false;
        for (int i = 0; i < n && !tr; i++) {
            if (!vis[i] && are_connected({v.back()}, {i})) {
                v.push_back(i);
                tr = vis[i] = true;
            }
        }

        if (!tr) v.pop_back();
    }

    return v;
}

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