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  1. /// WHAT I CAN NOT CREATE , I DO NOT UNDERSTAND
  2. #include <bits/stdc++.h>
  3. using namespace std;
  4. typedef long long ll;
  5. typedef double db;
  6. typedef long double ld;
  7. typedef pair<int, int> pii;
  8. typedef pair<ll, ll> pll;
  9. typedef vector<int> vi;
  10. typedef vector<ll> vll;
  11. typedef vector<db> vd;
  12. typedef vector<ld> vld;
  13. typedef vector<bool> vb;
  14. typedef vector<vector<ll>> vvl;
  15. typedef vector<vector<int>> vvi;
  16. typedef vector<pii> vii;
  17. typedef set<int> si;
  18. typedef set<ll> sl;
  19. #define pb push_back
  20. #define pf push_front
  21. #define popb pop_back
  22. #define popf pop_front
  23. #define fi first
  24. #define se second
  25. #define all(x) x.begin(), x.end()
  26. #define rall(x) x.rbegin(), x.rend()
  27. #define endl "\n"
  28. const int MOD = 998244353, mod = 1e9 + 7, maxA = 1e5 + 5;
  29. #define time cerr << "Time Taken: " << (float)clock() / CLOCKS_PER_SEC << " Secs";
  30. //*===================>>>FastIO - FileIO<<<=========
  31. void fastIO()
  32. {
  33.     ios_base::sync_with_stdio(false);
  34.     cin.tie(nullptr);
  35.     cout.tie(nullptr);
  36. }
  37. void fileIO()
  38. {
  39. #ifndef ONLINE_JUDGE
  40.     freopen("in.txt", "r", stdin);
  41.     freopen("out.txt", "w", stdout);
  42. #endif
  43. }
  44.  
  45. void Blablabla()
  46. {
  47.     int n, q;
  48.     cin >> n >> q;
  49.  
  50.     vector<vector<int>> v(n);
  51.  
  52.     while (q--)
  53.     {
  54.         int op, idx;
  55.         cin >> op >> idx;
  56.  
  57.         if (op == 0)
  58.         {
  59.             int x;
  60.             cin >> x;
  61.  
  62.             v[idx].push_back(x);
  63.         }
  64.  
  65.         else if (op == 1)
  66.         {
  67.             for (int i = 0; i < v[idx].size(); i++)
  68.             {
  69.                 if(i > 0)
  70.                 {
  71.                     cout << " ";
  72.                 }
  73.                 cout << v[idx][i];
  74.             }
  75.             cout << endl;
  76.         }
  77.  
  78.         else if (op == 2)
  79.         {
  80.             v[idx].clear();
  81.         }
  82.     }
  83. }
  84.  
  85. int main()
  86. {
  87.     fastIO();
  88.     // fileIO();
  89.  
  90.     ll tc = 1, t = 1;
  91.     // cin >> t;
  92.     while (t--)
  93.     {
  94.         // cout << "Case " << tc++ << ": ";
  95.         Blablabla();
  96.     }
  97.     //   time;
  98.     return 0;
  99. }
  100.  
Success #stdin #stdout 2.99s 5320KB
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https://ideone.com/i57snm
language:
C++14 (gcc 8.3)
created:
8 days ago
visibility:
public

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