foo.c: In function 'main':
foo.c:12:1: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result]
 scanf("%d%d",&k,&n);
 ^~~~~~~~~~~~~~~~~~~

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

{"receive":"2020-05-29T12:28:54.738Z","handle":"2020-05-29T12:28:54.738Z","cache_start":"2020-05-29T12:28:54.744Z","read_cases":"2020-05-29T12:28:54.887Z","judge":"2020-05-29T12:28:54.891Z","done":"2020-05-29T12:28:55.239Z"}