foo.cc: In function 'int main()':
foo.cc:38:19: warning: format '%d' expects argument of type 'int*', but argument 2 has type 'long int*' [-Wformat=]
   scanf("%d",&a[i]);
              ~~~~~^
foo.cc:38:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d",&a[i]);
   ~~~~~^~~~~~~~~~~~

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

{"receive":"2020-07-22T01:16:36.448Z","handle":"2020-07-22T01:16:36.448Z","cache_start":"2020-07-22T01:16:36.456Z","read_cases":"2020-07-22T01:16:36.588Z","judge":"2020-07-22T01:16:36.591Z","done":"2020-07-22T01:16:36.981Z"}