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  1. #include <iostream>
  2.  
  3. using namespace std;
  4.  
  5. int main()
  6. {
  7.     int n, m;
  8.     cin >> n;
  9.     cin >> m;
  10.     int airwayMatrix[n][n] = {};
  11.     int sumOfConnections;
  12.     bool first;
  13.     int args[3];
  14.  
  15.     for(int i = 0; i < m; i++)
  16.     {
  17.         cin >> args[0];
  18.         cin >> args[1];
  19.         if(args[0] == 1)
  20.         {
  21.             cin >> args[2];
  22.             airwayMatrix[args[1]][args[2]] = 1;
  23.             airwayMatrix[args[2]][args[1]] = 1;
  24.         }
  25.         else if(args[0] == 4)
  26.         {
  27.             sumOfConnections = 0;
  28.             for(int j = 0; j < n; j++)
  29.             {
  30.                 if(airwayMatrix[args[1]][j] == 1)
  31.                     sumOfConnections++;
  32.             }
  33.             cout << sumOfConnections << '\n';
  34.         }
  35.         else if(args[0] == 5)
  36.         {
  37.             first = true;
  38.             for(int j = 0; j < n; j++)
  39.             {
  40.                 if(airwayMatrix[args[1]][j] == 1)
  41.                 {
  42.                     if(first)
  43.                     {
  44.                         cout << j;
  45.                         first = false;
  46.                     }
  47.                     else
  48.                     {
  49.                         cout << " " << j;
  50.                     }
  51.                 }
  52.             }
  53.             cout << '\n';
  54.         }
  55.     }
  56.     return 0;
  57. }
  58.  
Success #stdin #stdout 0s 5416KB
comments (?)
stdin
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5 9
1 0 1
1 0 3
1 1 3
4 1
5 0
5 4
1 0 2
1 1 4
5 0
stdout
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2
1 3

1 2 3
https://ideone.com/RjNavV
language:
C++ (gcc 8.3)
created:
2 years ago
visibility:
public

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