제출 #129539

실행 실패 (제출 코드 컴파일 에러)

Main.cpp:4:1: error: ‘longlong’ does not name a type
    4 | longlong factorial(int num) {
      | ^~~~~~~~
Main.cpp: In function ‘int main()’:
Main.cpp:14:13: error: ‘factorial’ was not declared in this scope
   14 |     cout << factorial(N);
      |             ^~~~~~~~~