View Compilation Error

0_0_36969569_16866.cpp: In function 'void dfs(int, int)':
0_0_36969569_16866.cpp:12:3: error: 'path' was not declared in this scope
   path.pop_back();
   ^
0_0_36969569_16866.cpp:30:2: error: 'path' was not declared in this scope
  path.pop_back();
  ^