foo.c: In function 'main':
foo.c:20:2: warning: 'gets' is deprecated [-Wdeprecated-declarations]
  gets(s);
  ^~~~
In file included from foo.c:1:0:
/usr/include/stdio.h:640:14: note: declared here
 extern char *gets (char *__s) __wur __attribute_deprecated__;
              ^~~~
foo.c: In function 'judge':
foo.c:15:1: warning: control reaches end of non-void function [-Wreturn-type]
 }
 ^
/tmp/ccyej60m.o: In function `main':
foo.c:(.text.startup+0xe): warning: the `gets' function is dangerous and should not be used.

自豪的采用jd5进行评测(github.com/masnn/jd5)

{"receive":"2020-02-23T08:47:00.350Z","handle":"2020-02-23T08:47:00.350Z","cache_start":"2020-02-23T08:47:00.351Z","read_cases":"2020-02-23T08:47:00.503Z","judge":"2020-02-23T08:47:00.504Z","done":"2020-02-23T08:47:00.977Z"}