foo.cc: In function 'int main()':
foo.cc:17:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d%d%d", &X, &Y, &n);
  ~~~~~^~~~~~~~~~~~~~~~~~~~~~
foo.cc:19:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d%d%d", &a[i], &b[i], &c[i]);
   ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

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

{"receive":"2020-07-28T02:16:16.061Z","handle":"2020-07-28T02:16:16.061Z","cache_start":"2020-07-28T02:16:16.068Z","read_cases":"2020-07-28T02:16:16.195Z","judge":"2020-07-28T02:16:16.196Z","done":"2020-07-28T02:16:17.061Z"}