View Compilation Error

0_0_39432659_13516.cpp:12:1: error: 'vector' does not name a type
   12 | vector<ll> g[1005];
      | ^~~~~~
0_0_39432659_13516.cpp: In function 'void Init()':
0_0_39432659_13516.cpp:19:9: error: 'g' was not declared in this scope
   19 |         g[i].clear();
      |         ^
0_0_39432659_13516.cpp: In function 'll Dfs(ll)':
0_0_39432659_13516.cpp:26:19: error: 'g' was not declared in this scope
   26 |     for(ll i=0; i<g[u].size(); i++) {
      |                   ^
0_0_39432659_13516.cpp: In function 'int main()':
0_0_39432659_13516.cpp:45:13: error: 'g' was not declared in this scope
   45 |             g[x].push_back(y);
      |             ^