View Compilation Error

0_0_28869977_5119.cpp: In function 'int main()':
0_0_28869977_5119.cpp:11:9: error: 'll' was not declared in this scope
         ll n;
         ^
0_0_28869977_5119.cpp:12:23: error: 'n' was not declared in this scope
         scanf("%lld",&n);
                       ^