oj.uz

답안 #110232

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
110232 2019-05-10T09:12:16 Z Arturgo 경주 (Race) (IOI11_race) C++14
9 / 100
 299 ms 56904 KB 
#include "race.h"
#include <vector>
#include <iostream>
#include <map>
using namespace std;

int INFINI = 1000 * 1000 * 1000;

int nbVilles, tailleTotale;
vector<pair<int, int>> voisins[200 * 1000];

struct Retour {
  long long decProf;
  int decChemin;
  map<long long, int> profs;

  Retour() {
    decChemin = 0;
    decProf = 0;
    profs[0] = 0;
  }

  void shift(long long taille) {
    decChemin++;
    decProf += taille;
  }

  int getChemin(long long prof) {
    if(profs.find(prof - decProf) == profs.end())
      return INFINI;
    return profs[prof - decProf] + decChemin;
  }

  void setChemin(long long prof, int chemin) {
    profs[prof - decProf] = chemin - decChemin;
  }

  vector<pair<long long, int>> getProfs() {
    vector<pair<long long, int>> res;
    for(pair<long long, int> paire : profs) {
      res.push_back({paire.first + decProf, paire.second + decChemin});
    }
    return res;
  }
};

vector<Retour> retours;

int melChemin = INFINI;

int fusion(int a, int b) {
  Retour& retA = retours[a];
  Retour& retB = retours[b];
  
  if(retA.profs.size() > retB.profs.size())
    fusion(b, a);

  vector<pair<long long, int>> profsA = retA.getProfs();
  for(pair<int, int> paire : profsA) {
    melChemin = min(melChemin, paire.second + retB.getChemin(tailleTotale - paire.first));
  }

  for(pair<long long, int> paire : profsA) {
    retB.setChemin(paire.first, min(retB.getChemin(paire.first), paire.second));
  }

  return b;
}

int calcChemin(int noeud, int parent = -1) {
  int id = retours.size();
  retours.push_back(Retour());

  for(pair<int, int> voisin : voisins[noeud]) {
    if(voisin.first == parent)
      continue;
    int retour = calcChemin(voisin.first, noeud);
    retours[retour].shift(voisin.second);

    id = fusion(id, retour);
  }

  return id;
}

int best_path(int _nbVilles, int _tailleTotale, int adjs[][2], int tailles[]) {
  nbVilles = _nbVilles;
  tailleTotale = _tailleTotale;

  for(int iRoute = 0;iRoute < nbVilles - 1;iRoute++) {
    voisins[adjs[iRoute][0]].push_back({adjs[iRoute][1], tailles[iRoute]});
    voisins[adjs[iRoute][1]].push_back({adjs[iRoute][0], tailles[iRoute]});
  }

  calcChemin(0);

  if(melChemin == INFINI)
    return -1;
  return melChemin;
}

Subtask #1
9.0 / 9.0

# 결과 실행 시간 메모리 Grader output
1 Correct 10 ms 5120 KB Output is correct
2 Correct 8 ms 5120 KB Output is correct
3 Correct 6 ms 5120 KB Output is correct
4 Correct 8 ms 5248 KB Output is correct
5 Correct 8 ms 5120 KB Output is correct
6 Correct 7 ms 5120 KB Output is correct
7 Correct 10 ms 5120 KB Output is correct
8 Correct 6 ms 4992 KB Output is correct
9 Correct 6 ms 5120 KB Output is correct
10 Correct 8 ms 5120 KB Output is correct
11 Correct 6 ms 5120 KB Output is correct
12 Correct 6 ms 5120 KB Output is correct
13 Correct 7 ms 5088 KB Output is correct
14 Correct 7 ms 5120 KB Output is correct
15 Correct 7 ms 5120 KB Output is correct
16 Correct 10 ms 5120 KB Output is correct
17 Correct 7 ms 5120 KB Output is correct
18 Correct 8 ms 5120 KB Output is correct

Subtask #2
0 / 12.0

# 결과 실행 시간 메모리 Grader output
1 Correct 10 ms 5120 KB Output is correct
2 Correct 8 ms 5120 KB Output is correct
3 Correct 6 ms 5120 KB Output is correct
4 Correct 8 ms 5248 KB Output is correct
5 Correct 8 ms 5120 KB Output is correct
6 Correct 7 ms 5120 KB Output is correct
7 Correct 10 ms 5120 KB Output is correct
8 Correct 6 ms 4992 KB Output is correct
9 Correct 6 ms 5120 KB Output is correct
10 Correct 8 ms 5120 KB Output is correct
11 Correct 6 ms 5120 KB Output is correct
12 Correct 6 ms 5120 KB Output is correct
13 Correct 7 ms 5088 KB Output is correct
14 Correct 7 ms 5120 KB Output is correct
15 Correct 7 ms 5120 KB Output is correct
16 Correct 10 ms 5120 KB Output is correct
17 Correct 7 ms 5120 KB Output is correct
18 Correct 8 ms 5120 KB Output is correct
19 Correct 7 ms 5120 KB Output is correct
20 Correct 8 ms 5120 KB Output is correct
21 Correct 14 ms 6400 KB Output is correct
22 Correct 10 ms 6016 KB Output is correct
23 Correct 16 ms 6912 KB Output is correct
24 Correct 15 ms 7424 KB Output is correct
25 Correct 14 ms 7548 KB Output is correct
26 Correct 12 ms 6912 KB Output is correct
27 Correct 8 ms 5376 KB Output is correct
28 Incorrect 18 ms 7424 KB Output isn't correct
29 Halted 0 ms 0 KB -

Subtask #3
0 / 22.0

# 결과 실행 시간 메모리 Grader output
1 Correct 10 ms 5120 KB Output is correct
2 Correct 8 ms 5120 KB Output is correct
3 Correct 6 ms 5120 KB Output is correct
4 Correct 8 ms 5248 KB Output is correct
5 Correct 8 ms 5120 KB Output is correct
6 Correct 7 ms 5120 KB Output is correct
7 Correct 10 ms 5120 KB Output is correct
8 Correct 6 ms 4992 KB Output is correct
9 Correct 6 ms 5120 KB Output is correct
10 Correct 8 ms 5120 KB Output is correct
11 Correct 6 ms 5120 KB Output is correct
12 Correct 6 ms 5120 KB Output is correct
13 Correct 7 ms 5088 KB Output is correct
14 Correct 7 ms 5120 KB Output is correct
15 Correct 7 ms 5120 KB Output is correct
16 Correct 10 ms 5120 KB Output is correct
17 Correct 7 ms 5120 KB Output is correct
18 Correct 8 ms 5120 KB Output is correct
19 Incorrect 299 ms 56904 KB Output isn't correct
20 Halted 0 ms 0 KB -

Subtask #4
0 / 57.0

# 결과 실행 시간 메모리 Grader output
1 Correct 10 ms 5120 KB Output is correct
2 Correct 8 ms 5120 KB Output is correct
3 Correct 6 ms 5120 KB Output is correct
4 Correct 8 ms 5248 KB Output is correct
5 Correct 8 ms 5120 KB Output is correct
6 Correct 7 ms 5120 KB Output is correct
7 Correct 10 ms 5120 KB Output is correct
8 Correct 6 ms 4992 KB Output is correct
9 Correct 6 ms 5120 KB Output is correct
10 Correct 8 ms 5120 KB Output is correct
11 Correct 6 ms 5120 KB Output is correct
12 Correct 6 ms 5120 KB Output is correct
13 Correct 7 ms 5088 KB Output is correct
14 Correct 7 ms 5120 KB Output is correct
15 Correct 7 ms 5120 KB Output is correct
16 Correct 10 ms 5120 KB Output is correct
17 Correct 7 ms 5120 KB Output is correct
18 Correct 8 ms 5120 KB Output is correct
19 Correct 7 ms 5120 KB Output is correct
20 Correct 8 ms 5120 KB Output is correct
21 Correct 14 ms 6400 KB Output is correct
22 Correct 10 ms 6016 KB Output is correct
23 Correct 16 ms 6912 KB Output is correct
24 Correct 15 ms 7424 KB Output is correct
25 Correct 14 ms 7548 KB Output is correct
26 Correct 12 ms 6912 KB Output is correct
27 Correct 8 ms 5376 KB Output is correct
28 Incorrect 18 ms 7424 KB Output isn't correct
29 Halted 0 ms 0 KB -