foo.cc: In function 'bool judge(std::__cxx11::string)':
foo.cc:75:14: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
 for(int i=0;i<s.size();i++)
             ~^~~~~~~~~
foo.cc: In function 'std::__cxx11::string div(std::__cxx11::string, std::__cxx11::string, int)':
foo.cc:72:1: warning: control reaches end of non-void function [-Wreturn-type]
 }
 ^

自豪的采用jd5进行评测(github.com/masnn/jd5)

{"receive":"2020-02-16T03:49:22.152Z","handle":"2020-02-16T03:49:22.152Z","cache_start":"2020-02-16T03:49:22.152Z","read_cases":"2020-02-16T03:49:22.428Z","judge":"2020-02-16T03:49:22.434Z","done":"2020-02-16T03:49:23.416Z"}