View Compilation Error

0_0_22551763_28722.cpp:7:7: error: expected nested-name-specifier before 'namespacge'
 using namespacge std;
       ^
0_0_22551763_28722.cpp:11:18: error: 'vector' does not name a type
 int N,M,A[maxn]; vector <int> tmp;
                  ^
0_0_22551763_28722.cpp: In function 'void dfs(Node*)':
0_0_22551763_28722.cpp:85:2: error: 'tmp' was not declared in this scope
  tmp.push_back(u->val);
  ^
0_0_22551763_28722.cpp: In function 'void rebuild()':
0_0_22551763_28722.cpp:90:2: error: 'tmp' was not declared in this scope
  tmp.clear(); cur = stop; root = NULL;
  ^
0_0_22551763_28722.cpp:91:14: error: unable to deduce 'auto&&' from 'tmp'
  for (auto v:tmp) root = old_merge(root,newnode(v));
              ^