foo.cc: In function 'int main()':
foo.cc:12:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d%d",&n,&m);
     ~~~~~^~~~~~~~~~~~~~
foo.cc:14:28: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
         scanf("%d",&num[i]),
         ~~~~~~~~~~~~~~~~~~~^
         num[i+n]=num[i];
         ~~~~~~~~~~~~~~~     

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

{"receive":"2020-08-15T14:29:11.367Z","handle":"2020-08-15T14:29:11.386Z","done":"2020-08-15T14:29:14.453Z"}