View Compilation Error

0_0_33754714_25696.cpp: In function 'void Add(int)':
0_0_33754714_25696.cpp:13:16: error: 'Tag' was not declared in this scope
   if(i==len-1) Tag[x].push_back(Id);
                ^
0_0_33754714_25696.cpp: In function 'void dfs(int)':
0_0_33754714_25696.cpp:36:16: error: 'Tag' was not declared in this scope
  for(int i=0;i<Tag[x].size();i++){
                ^
0_0_33754714_25696.cpp:43:16: error: 'Tag' was not declared in this scope
  for(int i=0;i<Tag[x].size();i++) Add(1,1,n,Tag[x][i],0);
                ^
0_0_33754714_25696.cpp: In function 'int main()':
0_0_33754714_25696.cpp:49:27: error: 'Tag' was not declared in this scope
   for(int i=1;i<=cnt;i++) Tag[i].clear(); cnt=-1; New();
                           ^