foo.cc: In function 'int main()':
foo.cc:8:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%c", &c);
   ~~~~~^~~~~~~~~~
foo.cc:13:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%s", s[a[i]]);
   ~~~~~^~~~~~~~~~~~~~~

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

{"receive":"2020-05-23T06:38:35.779Z","handle":"2020-05-23T06:38:35.779Z","cache_start":"2020-05-23T06:38:35.785Z","read_cases":"2020-05-23T06:38:35.919Z","judge":"2020-05-23T06:38:35.922Z","done":"2020-05-23T06:38:37.322Z"}