View Compilation Error

0_0_22552033_7043.cpp:22:1: error: invalid use of template-name 'std::vector' without an argument list
 vector
 ^
0_0_22552033_7043.cpp: In function 'void init()':
0_0_22552033_7043.cpp:27:9: error: 'G' was not declared in this scope
         G[i].clear();
         ^
0_0_22552033_7043.cpp: In function 'void dfs(int, int)':
0_0_22552033_7043.cpp:38:24: error: 'G' was not declared in this scope
     for(int i = 0; i < G[x].size(); i++) {
                        ^
0_0_22552033_7043.cpp: In function 'int main()':
0_0_22552033_7043.cpp:94:13: error: 'G' was not declared in this scope
             G[u].push_back(P(u, v, tr[i].cost));
             ^