foo.c: In function 'main':
foo.c:18:9: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result]
         scanf("%d",&n);
         ^~~~~~~~~~~~~~

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

{"receive":"2020-05-30T06:57:56.828Z","handle":"2020-05-30T06:57:56.828Z","cache_start":"2020-05-30T06:57:56.841Z","read_cases":"2020-05-30T06:57:56.979Z","judge":"2020-05-30T06:57:56.982Z","done":"2020-05-30T06:57:57.283Z"}