View Compilation Error

0_0_35977759_21591.cpp:9:1: error: 'lls' does not name a type
 lls f[N];
 ^
0_0_35977759_21591.cpp: In function 'void init(int)':
0_0_35977759_21591.cpp:12:2: error: 'f' was not declared in this scope
  f[1] = 0;
  ^
0_0_35977759_21591.cpp: In function 'int main()':
0_0_35977759_21591.cpp:28:11: error: 'f' was not declared in this scope
   cout << f[n] << endl;
           ^