View Compilation Error

0_0_29277189_6108.cpp: In function 'int main()':
0_0_29277189_6108.cpp:34:35: error: request for member 'begin' in 'a', which is of non-class type 'll [500005] {aka long long int [500005]}'
         int maxnum=*max_element(a.begin(),a.end());
                                   ^
0_0_29277189_6108.cpp:34:45: error: request for member 'end' in 'a', which is of non-class type 'll [500005] {aka long long int [500005]}'
         int maxnum=*max_element(a.begin(),a.end());
                                             ^