oj.uz

Submission #626686

# Submission time Handle Problem Language Result Execution time Memory
626686 2022-08-11T16:06:45 Z Mounir Simurgh (IOI17_simurgh) C++14
0 / 100
 187 ms 9796 KB 
#include "simurgh.h"
#include <bits/stdc++.h>
#define all(x) x.begin(), x.end()
#define pb push_back
#define pii pair<int, int>
#define sz(x) (int)x.size()
#define x first
#define y second
using namespace std;

const int N = 2000, M = 3e5;
int ens[N];
bool check[M];


int getEns(int noeud){
	if (ens[noeud] != noeud)	
		ens[noeud] = getEns(ens[noeud]);
	return ens[noeud];
}

int nNoeuds;
set<int> royales;
vector<pii> aretes;
set<int> sortantes[N];

void findRoyales(int supprime){
	/*cout << "deja trouvee " << supprime << endl;
	for (int royale : royales)
		cout << royale << " ";
	cout << endl;*/
	for (int noeud = 0; noeud < nNoeuds; ++noeud)
		ens[noeud] = noeud;
	
	vector<int> choisies;
	for (int royale : royales){
		ens[getEns(aretes[royale].x)] = getEns(aretes[royale].y);
		choisies.pb(royale);
	}

	int id = -1;
	vector<vector<int>> liens;
	vector<int> icc;
	int nb = nNoeuds - sz(royales);
	for (pii arete : aretes){
		id++;
		if (arete.x <= supprime || arete.y <= supprime) continue;

		if (getEns(arete.x) != getEns(arete.y)){
			ens[getEns(arete.y)] = getEns(arete.x);
			choisies.pb(id);
			nb--;
		}
	}
	//cout << "nb " << nb << endl;

	if (nb == 1) return;

	for (int sortante : sortantes[supprime]){
		int autre = aretes[sortante].x;
		if (autre == supprime)
			autre = aretes[sortante].y;
		bool add = false;
		for (int iLien = 0; iLien < sz(liens); ++iLien){
			if (icc[iLien] == getEns(autre)){
				add = true;
				liens[iLien].pb(sortante);
			}
		}
		if (!add) {
			icc.pb(getEns(autre));
			liens.pb({sortante});
		}
	}


	for (int iLien = 0; iLien < sz(liens); ++iLien){
		vector<int> total = choisies;
		for (int iAutre = 0; iAutre < sz(liens); ++iAutre){
			if (iAutre != iLien)
				total.pb(liens[iAutre][0]);
		}

		vector<pii> resRoute;
		for (int lien : liens[iLien]) {
			total.pb(lien);
			/*cout << "guess" << endl;
			for (int c : total)
				cout << c << " ";
			cout << endl;*/
			resRoute.pb({count_common_roads(total), lien});
			
			total.pop_back();
		}

		sort(all(resRoute));
		int maxi = resRoute.back().x;
		while (!resRoute.empty() && resRoute.back().x == maxi){
			royales.insert(resRoute.back().y);
			resRoute.pop_back();
		}
	}
}

vector<int> find_roads(int n, vector<int> u, vector<int> v) {
	nNoeuds = n;
	for (int i = 0; i < sz(u); ++i) {
		aretes.pb(make_pair(u[i], v[i]));
		sortantes[u[i]].insert(i);
		sortantes[v[i]].insert(i);
	}

	for (int sup = 0; sup < n; ++sup) {
		findRoyales(sup);
		for (int sortante : sortantes[sup]){
			int autre = aretes[sortante].x;
			if (autre == sup)
				autre = aretes[sortante].y;
			if (sortantes[autre].count(sortante))
				sortantes[autre].erase(sortante);
		}
	}
	vector<int> ans;
	for (int e : royales)
		ans.pb(e);
/*
	cout << "royales" << endl;
	for (int e : ans)
		cout << e << " ";
	cout << endl;*/
	return ans;
}

Subtask #1
0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 340 KB correct
2 Correct 0 ms 340 KB correct
3 Correct 0 ms 340 KB correct
4 Correct 1 ms 340 KB correct
5 Incorrect 0 ms 340 KB WA in grader: NO
6 Halted 0 ms 0 KB -

Subtask #2
0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 340 KB correct
2 Correct 0 ms 340 KB correct
3 Correct 0 ms 340 KB correct
4 Correct 1 ms 340 KB correct
5 Incorrect 0 ms 340 KB WA in grader: NO
6 Halted 0 ms 0 KB -

Subtask #3
0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 340 KB correct
2 Correct 0 ms 340 KB correct
3 Correct 0 ms 340 KB correct
4 Correct 1 ms 340 KB correct
5 Incorrect 0 ms 340 KB WA in grader: NO
6 Halted 0 ms 0 KB -

Subtask #4
0 / 19.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 340 KB correct
2 Correct 1 ms 340 KB correct
3 Incorrect 187 ms 9796 KB WA in grader: NO
4 Halted 0 ms 0 KB -

Subtask #5
0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 340 KB correct
2 Correct 0 ms 340 KB correct
3 Correct 0 ms 340 KB correct
4 Correct 1 ms 340 KB correct
5 Incorrect 0 ms 340 KB WA in grader: NO
6 Halted 0 ms 0 KB -