View Compilation Error

0_0_19367533_24151.cpp: In function 'int main()':
0_0_19367533_24151.cpp:31:18: error: invalid types 'std::string [1001] {aka std::basic_string<char> [1001]}[<unresolved overloaded function type>]' for array subscript
       cout<<s[max]<<endl;
                  ^