Submission #124649

#	Time	Username	Problem	Language	Result	Execution time	Memory
124649		Touubs	Sightseeing (NOI14_sightseeing)	C++17	15 / 25	3330 ms	262148 KiB

sightseeing

#include <bits/stdc++.h>
using namespace std;
#define int long long



signed main() {
  ios_base::sync_with_stdio(false);
  cin.tie(0);
  int v, e, q;
  cin >> v >> e >> q;
  vector<vector<pair<int, int>>> graph(v+1);

  for (int i = 0; i < e; i++) {
    int a, b, qual;
    cin >> a >> b >> qual;
    graph[a].emplace_back(qual, b);
    graph[b].emplace_back(qual, a);
  }

  priority_queue<pair<int, int>> queue;
  queue.push(make_pair(1000000, 1));
  vector<bool> visited(v + 1);
  vector<int> optimum(v + 1);

  while (!queue.empty()) {
    pair<int, int> pos = queue.top();
    queue.pop();

    if (visited[pos.second]) continue;
    visited[pos.second] = true;
    
    optimum[pos.second] = pos.first;

    for (pair<int, int> adj : graph[pos.second]) {
      queue.push(make_pair(min(pos.first, adj.first), adj.second));
    }
  }

  for (int i = 0; i < q; i++) {
    int query;
    cin >> query;
    cout << optimum[query] << "\n";
  }
}

• Subtask 1: 4 / 4
• Subtask 2: 5 / 5
• Subtask 3: 6 / 6
• Subtask 4: 0 / 10