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Submission #1087944

# Submission time Handle Problem Language Result Execution time Memory
1087944 2024-09-13T15:08:27 Z T0p_ Crocodile's Underground City (IOI11_crocodile) C++14
0 / 100
 2 ms 2908 KB 
#include "crocodile.h"
#include <bits/stdc++.h>

using namespace std;

const int MAX_N = 100000 + 5;

int degree[MAX_N];
long long mn_1[MAX_N], mn_2[MAX_N];
bool is_process[MAX_N];
vector<pair<int, long long>> g[MAX_N];

void update(int u, long long v) {
  if (v < mn_1[u]) {
    mn_2[u] = mn_1[u];
    mn_1[u] = v;
  }
  else {
    mn_2[u] = min(mn_2[u], v);
  }
}

int travel_plan(int N, int M, int R[][2], int L[], int K, int P[]) {
  for (int i=0 ; i<N ; i++) {
    mn_1[i] = mn_2[i] = 2e9;
  }

  for (int i=0 ; i<M ; i++) {
    g[R[i][0]].push_back({ R[i][1], L[i] });
    g[R[i][1]].push_back({ R[i][0], L[i] });

    degree[R[i][0]]++;
    degree[R[i][1]]++;
  }

  queue<int> topo;

  for (int i=0 ; i<K ; i++) {
    is_process[P[i]] = true;
    topo.push(P[i]);
    mn_1[P[i]] = mn_2[P[i]] = 0;
  }
  
  while (!topo.empty()) {
    int u = topo.front();
    topo.pop();

    for (pair<int, long long> edge : g[u]) {
      degree[edge.first]--;
      update(edge.first, mn_2[u] + edge.second);

      if (!is_process[edge.first] && degree[edge.first] == 1) {
        is_process[edge.first] = true;
        topo.push(edge.first);
      }
    }
  }

  return mn_2[0];
}

Subtask #1
0 / 46.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2648 KB Output is correct
2 Correct 1 ms 2652 KB Output is correct
3 Correct 1 ms 2872 KB Output is correct
4 Correct 1 ms 2908 KB Output is correct
5 Correct 1 ms 2908 KB Output is correct
6 Correct 1 ms 2908 KB Output is correct
7 Correct 1 ms 2908 KB Output is correct
8 Incorrect 2 ms 2908 KB Output isn't correct
9 Halted 0 ms 0 KB -

Subtask #2
0 / 43.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2648 KB Output is correct
2 Correct 1 ms 2652 KB Output is correct
3 Correct 1 ms 2872 KB Output is correct
4 Correct 1 ms 2908 KB Output is correct
5 Correct 1 ms 2908 KB Output is correct
6 Correct 1 ms 2908 KB Output is correct
7 Correct 1 ms 2908 KB Output is correct
8 Incorrect 2 ms 2908 KB Output isn't correct
9 Halted 0 ms 0 KB -

Subtask #3
0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2648 KB Output is correct
2 Correct 1 ms 2652 KB Output is correct
3 Correct 1 ms 2872 KB Output is correct
4 Correct 1 ms 2908 KB Output is correct
5 Correct 1 ms 2908 KB Output is correct
6 Correct 1 ms 2908 KB Output is correct
7 Correct 1 ms 2908 KB Output is correct
8 Incorrect 2 ms 2908 KB Output isn't correct
9 Halted 0 ms 0 KB -