oj.uz

Submission #740460

# Submission time Handle Problem Language Result Execution time Memory
740460 2023-05-12T13:50:12 Z abczz Crocodile's Underground City (IOI11_crocodile) C++14
89 / 100
 522 ms 90972 KB 
#include "crocodile.h"
#include <iostream>
#include <vector>
#include <array>
#include <queue>
#define ll long long

using namespace std;

vector <array<ll, 2> > adj[100000];
priority_queue <array<ll, 2>, vector<array<ll, 2>>, greater<array<ll,2>>> pq;
ll dist[100000], in[100000], MN[2][100000];

int travel_plan(int N, int M, int R[][2], int L[], int K, int P[])
{
  for (int i=0; i<N; ++i) dist[i] = MN[0][i] = MN[1][i] = 1e18;
  for (int i=0; i<M; ++i) {
    adj[R[i][0]].push_back({R[i][1], L[i]});
    adj[R[i][1]].push_back({R[i][0], L[i]});
  }
  for (int i=0; i<K; ++i) {
    dist[P[i]] = 0;
    pq.push({0, P[i]});
  }
  while (!pq.empty()) {
    auto [w, u] = pq.top();
    pq.pop();
    if (dist[u] != w) continue;
    for (auto [v, x] : adj[u]) {
      if (dist[v] > dist[u]+x) {
        ++in[v];
        if (in[v] == 1) MN[0][v] = dist[u]+x;
        else if (in[v] == 2) {
          MN[1][v] = max(MN[0][v], dist[u]+x);
          MN[0][v] = min(MN[0][v], dist[u]+x);
          dist[v] = MN[1][v];
          pq.push({dist[v], v});
        }
        else {
          if (MN[0][v] > dist[u]+x) {
            MN[1][v] = MN[0][v];
            MN[0][v] = dist[u]+x;
            dist[v] = MN[1][v];
            pq.push({dist[v], v});
          }
          else if (MN[1][v] > dist[u]+x) {
            MN[1][v] = dist[u]+x;
            dist[v] = MN[1][v];
            pq.push({dist[v], v});
          }
        }
      }
    }
  }
  return dist[0];
}

Compilation message

crocodile.cpp: In function 'int travel_plan(int, int, int (*)[2], int*, int, int*)':
crocodile.cpp:26:10: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17'
   26 |     auto [w, u] = pq.top();
      |          ^
crocodile.cpp:29:15: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17'
   29 |     for (auto [v, x] : adj[u]) {
      |               ^

Subtask #1
46.0 / 46.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2644 KB Output is correct
2 Correct 1 ms 2644 KB Output is correct
3 Correct 2 ms 2644 KB Output is correct
4 Correct 2 ms 2804 KB Output is correct
5 Correct 2 ms 2772 KB Output is correct
6 Correct 2 ms 2772 KB Output is correct
7 Correct 2 ms 2800 KB Output is correct
8 Correct 2 ms 2772 KB Output is correct

Subtask #2
43.0 / 43.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2644 KB Output is correct
2 Correct 1 ms 2644 KB Output is correct
3 Correct 2 ms 2644 KB Output is correct
4 Correct 2 ms 2804 KB Output is correct
5 Correct 2 ms 2772 KB Output is correct
6 Correct 2 ms 2772 KB Output is correct
7 Correct 2 ms 2800 KB Output is correct
8 Correct 2 ms 2772 KB Output is correct
9 Correct 3 ms 3124 KB Output is correct
10 Correct 2 ms 2644 KB Output is correct
11 Correct 2 ms 2772 KB Output is correct
12 Correct 5 ms 3412 KB Output is correct
13 Correct 5 ms 3412 KB Output is correct
14 Correct 2 ms 2644 KB Output is correct
15 Correct 2 ms 2828 KB Output is correct

Subtask #3
0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2644 KB Output is correct
2 Correct 1 ms 2644 KB Output is correct
3 Correct 2 ms 2644 KB Output is correct
4 Correct 2 ms 2804 KB Output is correct
5 Correct 2 ms 2772 KB Output is correct
6 Correct 2 ms 2772 KB Output is correct
7 Correct 2 ms 2800 KB Output is correct
8 Correct 2 ms 2772 KB Output is correct
9 Correct 3 ms 3124 KB Output is correct
10 Correct 2 ms 2644 KB Output is correct
11 Correct 2 ms 2772 KB Output is correct
12 Correct 5 ms 3412 KB Output is correct
13 Correct 5 ms 3412 KB Output is correct
14 Correct 2 ms 2644 KB Output is correct
15 Correct 2 ms 2828 KB Output is correct
16 Correct 419 ms 83684 KB Output is correct
17 Correct 72 ms 19172 KB Output is correct
18 Correct 91 ms 21532 KB Output is correct
19 Correct 522 ms 90972 KB Output is correct
20 Correct 263 ms 68076 KB Output is correct
21 Correct 35 ms 10152 KB Output is correct
22 Incorrect 291 ms 64608 KB Output isn't correct
23 Halted 0 ms 0 KB -