foo.c: In function 'main':
foo.c:24:2: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d%d%d",&year,&month,&day);
  ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

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

{"receive":"2020-07-21T15:41:11.553Z","handle":"2020-07-21T15:41:11.553Z","done":"2020-07-21T15:41:11.921Z"}