/in/foo.cc: In function 'int main()':
/in/foo.cc:67:28: warning: unused variable 'answer' [-Wunused-variable]
   67 |         unsigned long long answer = 1ULL;
      |                            ^~~~~~
/in/foo.cc:73:5: error: expected '}' at end of input
   73 |     }
      |     ^
/in/foo.cc:19:12: note: to match this '{'
   19 | int main() {
      |            ^