Submission #374956

#	Time	Username	Problem	Language	Result	Execution time	Memory
374956		BartolM	Meetings (JOI19_meetings)	C++17	29 / 100	2878 ms	1580 KiB

meetings

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

using namespace std;

#define X first
#define Y second
#define mp make_pair
#define pb push_back
typedef long long ll;
typedef pair <int, int> pii;
typedef pair <int, pii> pip;
typedef pair <pii, int> ppi;
typedef pair <ll, ll> pll;

const int INF=0x3f3f3f3f;

int n;

void upit(int x, int y) {
    Bridge(min(x, y), max(x, y));
}

void rek(vector <int> v) {
    if (v.size()==1) return;
    if (v.size()==2) {
        upit(v[0], v[1]);
        return;
    }
    int uk=0;

    vector <int> nv[18];
    int koji[18];

    int cent=v[rand()%(int)v.size()];

    #if DEBUG
        printf("cent: %d\n", cent);
        for (int x:v) printf("%d ", x);
        printf("\n");
    #endif // DEBUG

    for (int x:v) {
        if (x==cent) continue;
        int fl=0;
        for (int i=0; i<uk; ++i) {
            int y=Query(cent, koji[i], x);
            if (y==cent) continue;
            nv[i].pb(x);
            fl=1;
            if (y==x) koji[i]=x;
            break;
        }
        if (!fl) {
            nv[uk].pb(x);
            koji[uk++]=x;
        }
    }
    for (int i=0; i<uk; ++i) upit(cent, koji[i]);
    for (int i=0; i<uk; ++i) rek(nv[i]);
}

void Solve(int nn) {
    n=nn;
    srand(time(0));
    vector <int> poc;
    for (int i=0; i<n; ++i) poc.pb(i);
    random_shuffle(poc.begin(), poc.end());
    rek(poc);
}
/*
5
0 1
0 2
1 3
1 4
*/

• Subtask 1: 7 / 7
• Subtask 2: 10 / 10
• Subtask 3: 12 / 12
• Subtask 4: 0 / 71