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  1. #include <iostream>
  2. #include <vector>
  3. #include <queue>
  4. using namespace std;
  5.  
  6. vector<vector<int>> wektor;
  7. vector<int> odwiedzone;
  8. vector<int> komponent;
  9.  
  10. void BFS(int v, int componentId) {
  11.     queue<int> q;
  12.     q.push(v);
  13.     odwiedzone[v] = 1;
  14.     komponent[v] = componentId;
  15.  
  16.     while (!q.empty()) {
  17.         int p = q.front();
  18.         q.pop();
  19.  
  20.         for (int j : wektor[p]) {
  21.             if (odwiedzone[j] == 0) {
  22.                 odwiedzone[j] = 1;
  23.                 komponent[j] = componentId;
  24.                 q.push(j);
  25.             }
  26.         }
  27.     }
  28. }
  29.  
  30. int main() {
  31.     int a, b;
  32.     int ile_v, ile_e;
  33.  
  34.     cin >> ile_v >> ile_e;
  35.  
  36.     wektor.resize(ile_v + 1);
  37.     odwiedzone.resize(ile_v + 1, 0);
  38.     komponent.resize(ile_v + 1, 0);
  39.  
  40.     for (int i = 0; i < ile_e; i++) {
  41.         cin >> a >> b;
  42.         wektor[a].push_back(b);
  43.         wektor[b].push_back(a);
  44.     }
  45.  
  46.     int componentId = 0;
  47.     for (int i = 1; i <= ile_v; i++) {
  48.         if (odwiedzone[i] == 0) {
  49.             componentId++;
  50.             BFS(i, componentId);
  51.         }
  52.     }
  53.  
  54.     int ile_q;
  55.     cin >> ile_q;
  56.  
  57.     for (int i = 0; i < ile_q; i++) {
  58.         int p, k;
  59.         cin >> p >> k;
  60.         if (komponent[p] == komponent[k]) {
  61.             cout << "TAK\n";
  62.         } else {
  63.             cout << "NIE\n";
  64.         }
  65.     }
  66.  
  67.     return 0;
  68. }
Success #stdin #stdout 0.01s 5288KB
comments (?)
stdin
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8 6
1 2
5 7
3 2
5 8
1 3
2 4
4 
1 4
6 7
7 5
3 8
stdout
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TAK
NIE
TAK
NIE
https://ideone.com/AT1EKw
language:
C++14 (gcc 8.3)
created:
16 hours ago
visibility:
public

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