Submission #628577

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
628577	2022-08-13 13:55:08	c28dnv9q3	Thousands Islands (IOI22_islands)	C++17	9.10 / 100	31 ms	5580 KiB

islands

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#include "islands.h"
#include <variant>
#include <vector>
#include <map>
#include <queue>
using namespace std;
vector<int> U, V;
int N, M;
vector<vector<int>> adj;
bool path_exists(int target) {
  vector<bool> vis(N);
  queue<int> q;
  q.push(0);
  vis[0] = true;
  while (!q.empty()) {
    int x = q.front(); q.pop();
    if (x == target) return true;
    for (auto c : adj[x]) {
      if (!vis[V[c]]) {
        vis[V[c]] = true;
        q.push(V[c]);
      }
    }
  }
  return false;
}
 
 
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• Subtask 1: 0 / 5
• Subtask 2: 1.75 / 5
• Subtask 3: 7.35 / 21
• Subtask 4: 0 / 24
• Subtask 5: 0 / 45