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  1. #include <bits/stdc++.h>
  2. #define ll long long
  3. #define go ios::sync_with_stdio(0), cin.tie(0), cout.tie(0)
  4. using namespace std;
  5.  
  6. int const N = 2e5 + 10;
  7. void dfs(int s, vector<int> adj[], int color[], int c)
  8. {
  9.     color[s] = c;
  10.     for (int i : adj[s])
  11.     {
  12.         if (color[i] == 0)
  13.         {
  14.             dfs(i, adj, color, c);
  15.         }
  16.     }
  17. }
  18. void solve()
  19. {
  20.     int n, m, q;
  21.     cin >> n >> m >> q;
  22.     vector<int> adj[n + 1];
  23.     int color[n + 1];
  24.     for (int i = 0; i <= n; i++)
  25.     {
  26.         color[i] = 0;
  27.     }
  28.     for (int i = 0; i < m; i++)
  29.     {
  30.         int u, v;
  31.         cin >> u >> v;
  32.         adj[u].push_back(v);
  33.         adj[v].push_back(u);
  34.     }
  35.     char ans[q];
  36.     for (int i = 1; i <= n; i++)
  37.     {
  38.         if (color[i] == 0)
  39.         {
  40.             dfs(i, adj, color, i);
  41.         }
  42.     }
  43.     for (int i = 0; i < q; i++)
  44.     {
  45.         int u, v;
  46.         cin >> u >> v;
  47.         ans[i] = (color[u] == color[v]) + '0';
  48.     }
  49.     for (char c : ans)
  50.     {
  51.         cout << c;
  52.     }
  53. }
  54.  
  55. int main()
  56. {
  57.     int t = 1;
  58.     cin >> t;
  59.     // go;
  60.     while (t--)
  61.     {
  62.         solve();
  63.         cout << "\n";
  64.     }
  65.     return 0;
  66. }
Success #stdin #stdout 0.01s 5516KB
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https://ideone.com/Y3TCwi
language:
C++ (gcc 8.3)
created:
2 years ago
visibility:
public

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