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  1. #include <bits/stdc++.h>
  2.  
  3. #define pb push_back
  4. #define mp make_pair
  5. #define F first
  6. #define S second
  7. #define SpeedForce ios_base::sync_with_stdio(0), cin.tie(0)
  8. #define forn(i, n) for(int i = 1; i <= n; i++)
  9. #define rep(i, x, y) for(int i = x; i <= y; i++)
  10. #define sz size()
  11. #define pii pair<int, int>
  12. #define ll long long
  13. #define ull unsigned long long
  14. #define ld long double
  15.  
  16. using namespace std;
  17.  
  18. const int mod = 1e9 + 7;
  19.  
  20. int n, m, k[500001], u[500001];
  21. vector <int> group[500001], user[500001];
  22.  
  23. /*int solve(int a) {
  24.     int ans = 0;
  25.     u[a] = 1;
  26.     for(auto i: user[a]) {
  27.         for(auto j: group[i]) {
  28.             if(!u[j]) {
  29.                 u[j] = 1;
  30.                 ans += (1 + solve(j));
  31.             }
  32.         }
  33.     }
  34.     return ans;
  35. }*/
  36.  
  37. int main() {
  38.     cin >> n >> m;
  39.  
  40.     for(int i = 1; i <= m; i++) {
  41.         cin >> k[i];
  42.         for(int j = 0; j < k[i]; j++) {
  43.             cin >> group[i][j];
  44.             //user[group[i][j]].pb(i);
  45.         }
  46.     }
  47.  
  48.     cout << 0;
  49.  
  50.     /*for(int i = 1; i <= n; i++) {
  51.         //cout << solve(i) << ' ';
  52.         memset(u, 0, sizeof u);
  53.     }*/
  54.  
  55. }
  56.  
Runtime error #stdin #stdout 0s 42576KB
comments (?)
stdin
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7 5
3 2 5 4
0
2 1 2
1 1
2 6 7
stdout
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Standard output is empty
https://ideone.com/6kysVW
language:
C++14 (gcc 8.3)
created:
4 years ago
visibility:
public

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