View Compilation Error

0_0_35937301_11506.cpp: In function 'int main()':
0_0_35937301_11506.cpp:10:5: error: 'll' was not declared in this scope
     ll n,f;
     ^
0_0_35937301_11506.cpp:21:23: error: 'n' was not declared in this scope
         scanf("%lld",&n);
                       ^
0_0_35937301_11506.cpp:24:13: error: 'f' was not declared in this scope
             f=0;
             ^