Submission #436383

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
436383	2021-06-24 13:06:32	VEGAnn	Fountain Parks (IOI21_parks)	C++17	100 / 100	556 ms	41632 KiB

parks

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#include "parks.h"
#include <algorithm>
#include <queue>
#include <vector>
const int kMax = 200005;
std::vector<std::pair<int, int>> fountains[kMax];
bool isConnected(std::vector<std::vector<int>> adj) {
  int n = adj.size();
  std::vector<bool> vis(n);
  std::queue<int> q;
  q.push(0); vis[0] = true;
  while (!q.empty()) {
    int u = q.front();
    q.pop();
    for (int v : adj[u]) {
      if (vis[v]) continue;
      vis[v] = true;
      q.push(v);
    }
  }
  return all_of(vis.begin(), vis.end(), [](bool visited) { return visited; });
}
 
 
הההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההה
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Compilation message (stderr)

parks.cpp: In function 'int construct_roads(std::vector<int>, std::vector<int>)':
parks.cpp:46:21: warning: suggest parentheses around '+' in operand of '&' [-Wparentheses]
   46 |       int ny = x[i] + y[i] & 2 ? y[i] + 1 : y[i] - 1;
parks.cpp:54:21: warning: suggest parentheses around '+' in operand of '&' [-Wparentheses]
   54 |       int nx = x[i] + y[i] & 2 ? x[i] - 1 : x[i] + 1;

• Subtask 1: 5 / 5
• Subtask 2: 10 / 10
• Subtask 3: 15 / 15
• Subtask 4: 20 / 20
• Subtask 5: 20 / 20
• Subtask 6: 30 / 30