foo.cc: In function 'int main()':
foo.cc:10:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%lld %lld", &x, &fx);
  ~~~~~^~~~~~~~~~~~~~~~~~~~~~

自豪的采用 HydroJudge 进行评测(github.com/hydro-dev/HydroJudge)

正在同步测试数据，请稍后
{"receive":"2020-07-17T03:17:26.767Z","handle":"2020-07-17T03:17:26.767Z","cache_start":"2020-07-17T03:17:26.783Z","read_cases":"2020-07-17T03:17:27.247Z","judge":"2020-07-17T03:17:27.247Z","done":"2020-07-17T03:17:27.703Z"}