Submission #1014283

#	Time	Username	Problem	Language	Result	Execution time	Memory
1014283		thangdz2k7	Meetings (JOI19_meetings)	C++17	100 / 100	608 ms	996 KiB

meetings

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

using namespace std;

void Ans(int u, int v){
    if (u < v) Bridge(u, v);
    else Bridge(v, u);
}

void Solve(vector <int> v){
    if (v.size() < 2) return;
    random_shuffle(v.begin(), v.end());
    int l = v[0], r = v[1];
    map <int, vector <int>> m;
    m[l].push_back(l);
    m[r].push_back(r);
    vector <int> path;
    for (auto k : v){
        if (k == l || k == r) continue;
        int x = Query(l, r, k);
        if (!m.count(x)) path.push_back(x);
        m[x].push_back(k);
    }

    sort(path.begin(), path.end(), [&](int x, int y){
        return Query(v[0], x, y) == x;
    });

    for (auto k : path) Ans(l, k), l = k;
    Ans(l, r);

    for (auto it : m) Solve(it.second);
}

void Solve(int n){
    srand(time(0));
    vector <int> cur(n, 0);
    for (int i = 1; i < n; ++ i) cur[i] = i;
    Solve(cur);
}

• Subtask 1: 7 / 7
• Subtask 2: 10 / 10
• Subtask 3: 12 / 12
• Subtask 4: 71 / 71