View Compilation Error

0_0_29288928_1606.cpp: In member function 'void G::init()':
0_0_29288928_1606.cpp:19:51: error: 'n' was not declared in this scope
  void init(){/*memset(h,0,sizeof h);*/ fill(h,h+1+n,0); ct=1;}
                                                   ^