View Compilation Error

0_0_38576090_22316.cpp:5:1: error: '_int64' does not name a type; did you mean '_time64'?
 _int64 qq(int n)
 ^~~~~~
 _time64
0_0_38576090_22316.cpp: In function 'int main()':
0_0_38576090_22316.cpp:26:11: error: 'qq' was not declared in this scope
   cout << qq(n) << endl;
           ^~