oj.uz

Submission #1108123

# Submission time Handle Problem Language Result Execution time Memory
1108123 2024-11-02T22:53:35 Z Gabriel Parachute rings (IOI12_rings) C++17
55 / 100
 4000 ms 107292 KB 
#include "bits/stdc++.h"
using namespace std;
long long n;
vector< vector<long long> > Grafo;
vector<long long> Visitados;
void Init(int N_) {
  n = (long long)N_;
  Grafo.assign(n, vector<long long>());
}
void Link(int A, int B){
  long long a = (long long)A;
  long long b = (long long)B;
  Grafo[a].push_back(b);
  Grafo[b].push_back(a);
}
int Bien;
long long Ciclos;
void DFS(long long Nodo, long long Anterior){
  Visitados[Nodo] = 1;
  long long c = 0;
  for(auto E: Grafo[Nodo]){
    if(Visitados[E] == 1) c++;
    if(Visitados[E] == 1 and E != Anterior){
      Bien = 0;
    }
    if(Visitados[E] == 0){
      DFS(E, Nodo);
      c++;
    }
  }
  if(c >= 3){
    Bien = 0;
  }
}
int CountCritical(){
  int r = 0;
  vector<long long> Buenos;
  for(long long i = 0; i < n; i++){
    if(Grafo[i].size() >= 4){
      Bien = 1;
      Visitados.assign(n, 0);
      Visitados[i] = 2;
      for(long long j = 0; j < n; j++){
        if(i == j) continue;
        if(Visitados[j] == 0){
          DFS(j, -2);
        }
      }
      return Bien;
    }
  }
  bool Solo_4 = 0;
  for(long long i = 0; i < n; i++){
    if(Grafo[i].size() == 3){
      Buenos.push_back(i);
      for(auto E: Grafo[i]){
        Buenos.push_back(E);
      }
      Solo_4 = 1;
      break;
    }
  }
  if(Solo_4){
    for(auto i: Buenos){
      Bien = 1;
      Visitados.assign(n, 0);
      Visitados[i] = 2;
      for(long long j = 0; j < n; j++){
        if(i == j) continue;
        if(Visitados[j] == 0){
          DFS(j, -2);
        }
      }
      r += Bien;
    }
  } else {
    Ciclos = 0;
    Visitados.assign(n, 0);
    long long Ciclado;
    for(long long i = 0; i < n; i++){
      if(!Visitados[i]){
        Bien = 1;
        DFS(i, -2);
        if(Bien == 0) Bien = 1;
        else Bien = 0;
        Ciclos += Bien;
        if(Bien == 1) Ciclado = i;
      }
    }
    if(Ciclos > 1) return 0;
    else if(Ciclos == 1){
      set<long long> Tenemos;
      while(1){
        if(Tenemos.find(Ciclado) != Tenemos.end()) break;
        r++;
        Tenemos.insert(Ciclado);
        long long a = Grafo[Ciclado][0], b = Grafo[Ciclado][1];
        if(Tenemos.count(a) == 0) Ciclado = a;
        else Ciclado = b;
      }
    } else {
      return (int)n;
    }
  }
  return r;
}

Subtask #1
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 336 KB Output is correct
2 Correct 2 ms 592 KB Output is correct
3 Correct 2 ms 592 KB Output is correct
4 Correct 1 ms 336 KB Output is correct
5 Correct 2 ms 592 KB Output is correct
6 Correct 3 ms 1104 KB Output is correct
7 Correct 1 ms 592 KB Output is correct
8 Correct 2 ms 592 KB Output is correct
9 Correct 3 ms 848 KB Output is correct
10 Correct 2 ms 592 KB Output is correct

Subtask #2
17.0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 246 ms 33020 KB Output is correct
2 Correct 484 ms 50504 KB Output is correct
3 Correct 549 ms 75672 KB Output is correct
4 Correct 620 ms 63236 KB Output is correct
5 Correct 694 ms 64800 KB Output is correct
6 Correct 1033 ms 107292 KB Output is correct
7 Correct 578 ms 73412 KB Output is correct
8 Correct 1326 ms 59208 KB Output is correct
9 Correct 1529 ms 63516 KB Output is correct
10 Correct 618 ms 64900 KB Output is correct

Subtask #3
18.0 / 18.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 336 KB Output is correct
2 Correct 2 ms 592 KB Output is correct
3 Correct 2 ms 592 KB Output is correct
4 Correct 1 ms 336 KB Output is correct
5 Correct 2 ms 592 KB Output is correct
6 Correct 3 ms 1104 KB Output is correct
7 Correct 1 ms 592 KB Output is correct
8 Correct 2 ms 592 KB Output is correct
9 Correct 3 ms 848 KB Output is correct
10 Correct 2 ms 592 KB Output is correct
11 Correct 10 ms 592 KB Output is correct
12 Correct 23 ms 1380 KB Output is correct
13 Correct 36 ms 1352 KB Output is correct
14 Correct 11 ms 1016 KB Output is correct
15 Correct 16 ms 1104 KB Output is correct
16 Correct 19 ms 1040 KB Output is correct
17 Correct 56 ms 948 KB Output is correct
18 Correct 29 ms 1524 KB Output is correct
19 Correct 19 ms 1084 KB Output is correct
20 Correct 57 ms 1108 KB Output is correct

Subtask #4
0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 336 KB Output is correct
2 Correct 2 ms 592 KB Output is correct
3 Correct 2 ms 592 KB Output is correct
4 Correct 1 ms 336 KB Output is correct
5 Correct 2 ms 592 KB Output is correct
6 Correct 3 ms 1104 KB Output is correct
7 Correct 1 ms 592 KB Output is correct
8 Correct 2 ms 592 KB Output is correct
9 Correct 3 ms 848 KB Output is correct
10 Correct 2 ms 592 KB Output is correct
11 Correct 10 ms 592 KB Output is correct
12 Correct 23 ms 1380 KB Output is correct
13 Correct 36 ms 1352 KB Output is correct
14 Correct 11 ms 1016 KB Output is correct
15 Correct 16 ms 1104 KB Output is correct
16 Correct 19 ms 1040 KB Output is correct
17 Correct 56 ms 948 KB Output is correct
18 Correct 29 ms 1524 KB Output is correct
19 Correct 19 ms 1084 KB Output is correct
20 Correct 57 ms 1108 KB Output is correct
21 Execution timed out 4062 ms 2432 KB Time limit exceeded
22 Halted 0 ms 0 KB -

Subtask #5
0 / 31.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 336 KB Output is correct
2 Correct 2 ms 592 KB Output is correct
3 Correct 2 ms 592 KB Output is correct
4 Correct 1 ms 336 KB Output is correct
5 Correct 2 ms 592 KB Output is correct
6 Correct 3 ms 1104 KB Output is correct
7 Correct 1 ms 592 KB Output is correct
8 Correct 2 ms 592 KB Output is correct
9 Correct 3 ms 848 KB Output is correct
10 Correct 2 ms 592 KB Output is correct
11 Correct 246 ms 33020 KB Output is correct
12 Correct 484 ms 50504 KB Output is correct
13 Correct 549 ms 75672 KB Output is correct
14 Correct 620 ms 63236 KB Output is correct
15 Correct 694 ms 64800 KB Output is correct
16 Correct 1033 ms 107292 KB Output is correct
17 Correct 578 ms 73412 KB Output is correct
18 Correct 1326 ms 59208 KB Output is correct
19 Correct 1529 ms 63516 KB Output is correct
20 Correct 618 ms 64900 KB Output is correct
21 Correct 10 ms 592 KB Output is correct
22 Correct 23 ms 1380 KB Output is correct
23 Correct 36 ms 1352 KB Output is correct
24 Correct 11 ms 1016 KB Output is correct
25 Correct 16 ms 1104 KB Output is correct
26 Correct 19 ms 1040 KB Output is correct
27 Correct 56 ms 948 KB Output is correct
28 Correct 29 ms 1524 KB Output is correct
29 Correct 19 ms 1084 KB Output is correct
30 Correct 57 ms 1108 KB Output is correct
31 Execution timed out 4062 ms 2432 KB Time limit exceeded
32 Halted 0 ms 0 KB -