foo.cc: In function 'int main()':
foo.cc:51:12: warning: 'char* gets(char*)' is deprecated [-Wdeprecated-declarations]
  gets(ss[i]);
            ^
In file included from /usr/include/c++/7/cstdio:42:0,
                 from /usr/include/c++/7/ext/string_conversions.h:43,
                 from /usr/include/c++/7/bits/basic_string.h:6361,
                 from /usr/include/c++/7/string:52,
                 from /usr/include/c++/7/bits/locale_classes.h:40,
                 from /usr/include/c++/7/bits/ios_base.h:41,
                 from /usr/include/c++/7/ios:42,
                 from /usr/include/c++/7/ostream:38,
                 from /usr/include/c++/7/iostream:39,
                 from foo.cc:1:
/usr/include/stdio.h:638:14: note: declared here
 extern char *gets (char *__s) __wur __attribute_deprecated__;
              ^~~~
foo.cc:46:9: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result]
  freopen("48.in","r",stdin);
  ~~~~~~~^~~~~~~~~~~~~~~~~~~
foo.cc:48:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d%d\n",&W,&H);
  ~~~~~^~~~~~~~~~~~~~~~
foo.cc:51:6: warning: ignoring return value of 'char* gets(char*)', declared with attribute warn_unused_result [-Wunused-result]
  gets(ss[i]);
  ~~~~^~~~~~~
/tmp/ccJcyWw7.o: In function `main':
foo.cc:(.text.startup+0x77): warning: the `gets' function is dangerous and should not be used.

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

{"receive":"2020-05-23T09:20:19.820Z","handle":"2020-05-23T09:20:19.820Z","cache_start":"2020-05-23T09:20:19.827Z","read_cases":"2020-05-23T09:20:19.988Z","judge":"2020-05-23T09:20:19.989Z","done":"2020-05-23T09:20:20.566Z"}