运行 ID: 433609

Main.cc: In function ‘int main()’:
Main.cc:4:2: error: ‘longlong’ was not declared in this scope
  longlong n;
  ^~~~~~~~
Main.cc:4:2: note: suggested alternative: ‘ulong’
  longlong n;
  ^~~~~~~~
  ulong
Main.cc:5:7: error: ‘n’ was not declared in this scope
  cin>>n;
       ^