View Compilation Error

0_0_31982902_545.cpp:17:5: error: invalid use of template-name 'std::vector' without an argument list
     vector
     ^
0_0_31982902_545.cpp: In function 'int main()':
0_0_31982902_545.cpp:40:43: error: 'struct node' has no member named 'v'
         for(int i = 1; i <= k; i++) eq[i].v.clear();
                                           ^
0_0_31982902_545.cpp:47:23: error: 'struct node' has no member named 'v'
                 eq[i].v.push_back(P(u,vv));
                       ^
0_0_31982902_545.cpp:56:48: error: 'struct node' has no member named 'v'
                 for(int j = 0; j < (int)(eq[i].v.size()); j++){
                                                ^
0_0_31982902_545.cpp:57:33: error: 'struct node' has no member named 'v'
                     P p = eq[i].v[j];
                                 ^