foo.c: In function 'main':
foo.c:63:5: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d",&N);
     ^~~~~~~~~~~~~~
foo.c:68:17: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result]
                 scanf("%d",&num[j][n]);
                 ^~~~~~~~~~~~~~~~~~~~~~

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

{"receive":"2020-08-16T06:54:06.661Z","handle":"2020-08-16T06:54:06.669Z","cache_start":"2020-08-16T06:54:06.754Z","read_cases":"2020-08-16T06:54:07.014Z","judge":"2020-08-16T06:54:07.020Z","done":"2020-08-16T06:54:07.597Z"}