foo.cc: In member function 'void ee::input(char*)':
foo.cc:7:10: warning: 'char* gets(char*)' is deprecated [-Wdeprecated-declarations]
    gets(a);
          ^
In file included from /usr/include/stdio.h:862:0,
                 from /usr/include/c++/7/cstdio:42,
                 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/x86_64-linux-gnu/bits/stdio2.h:232:1: note: declared here
 gets (char *__str)
 ^~~~
foo.cc:8:17: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
    for(int i=1;i<strlen(a);i++)
                ~^~~~~~~~~~
foo.cc:7:8: warning: ignoring return value of 'char* gets(char*)', declared with attribute warn_unused_result [-Wunused-result]
    gets(a);
    ~~~~^~~
/tmp/ccKGegdq.o: In function `main':
foo.cc:(.text.startup+0x30): warning: the `gets' function is dangerous and should not be used.

正在同步测试数据，请稍后
自豪的采用HydroJudge(https://github.com/hydro-dev/Hydro)进行评测。