Submission #890954

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
890954	2023-12-22 05:35:36	NeroZein	Cyberland (APIO23_cyberland)	C++17	100 / 100	1505 ms	101968 KiB

cyberland

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#include "cyberland.h"
#include <bits/stdc++.h>
using namespace std; 
using key = pair<double, int>; 
double solve(int N, int M, int K, int H, vector<int> x, vector<int> y, vector<int> c, vector<int> arr) {
  K = min(K, 100); 
  vector<vector<pair<int, int>>> g(N);
  for (int i = 0; i < M; ++i) {
    g[x[i]].emplace_back(y[i], c[i]);
    g[y[i]].emplace_back(x[i], c[i]); 
  }
  vector<bool> reachable(N, 0);
  function<void(int)> dfs = [&](int v) {
    if (reachable[v]) return;
    reachable[v] = true;
    if (v == H) return;
    for (auto [u, _] : g[v]) {
      dfs(u); 
    }
  };
  dfs(0);
  priority_queue<key, vector<key>, greater<key>> pq;
  vector<vector<double>> dp(N, vector<double> (K + 2, -1)); 
  for (int k = 0; k <= K; ++k) {
    for (int i = 0; i < N; ++i) {
      if (i == 0 || (reachable[i] && arr[i] == 0)) {
        dp[i][k] = 0; 
 
 
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• Subtask 2: 8 / 8
• Subtask 3: 13 / 13
• Subtask 4: 19 / 19
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• Subtask 6: 16 / 16
• Subtask 7: 29 / 29
• Subtask 8: 3 / 3