foo.cc: In function 'int main()':
foo.cc:41:22: warning: 'char* gets(char*)' is deprecated [-Wdeprecated-declarations]
         gets(map[i]+1);
                      ^
In file included from /usr/include/c++/7/cstdio:42:0,
                 from foo.cc:2:
/usr/include/stdio.h:638:14: note: declared here
 extern char *gets (char *__s) __wur __attribute_deprecated__;
              ^~~~
foo.cc:45:25: warning: statement has no effect [-Wunused-value]
           else map[i][j]==' ';
                ~~~~~~~~~^~~~~
foo.cc:37:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d%d",&w,&h);
     ~~~~~^~~~~~~~~~~~~~
foo.cc:41:13: warning: ignoring return value of 'char* gets(char*)', declared with attribute warn_unused_result [-Wunused-result]
         gets(map[i]+1);
         ~~~~^~~~~~~~~~
/tmp/ccwOnRbq.o: In function `main':
foo.cc:(.text.startup+0x6c): 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":"2020-05-27T14:01:34.280Z","handle":"2020-05-27T14:01:34.280Z","cache_start":"2020-05-27T14:01:34.286Z","read_cases":"2020-05-27T14:01:34.410Z","judge":"2020-05-27T14:01:34.413Z","done":"2020-05-27T14:01:34.785Z"}