View Compilation Error

0_0_39167992_7817.cpp:14:1: error: 'vector' does not name a type
   14 | vector<node> v[40005];
      | ^~~~~~
0_0_39167992_7817.cpp: In function 'void tarjan(int, int)':
0_0_39167992_7817.cpp:36:23: error: 'v' was not declared in this scope
   36 |         for(int i=0;i<v[x].size();i++){
      |                       ^
0_0_39167992_7817.cpp: In function 'int main()':
0_0_39167992_7817.cpp:63:25: error: 'v' was not declared in this scope
   63 |                         v[xx[i]].push_back({yy[i],i});
      |                         ^