foo.cc: In function 'double confuse(double)':
foo.cc:40:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for (i=0; i<strlen(ch); i++)
               ~^~~~~~~~~~~
foo.cc:42:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
         for (j=0; j<strlen(ch)-i-1; j++)
                   ~^~~~~~~~~~~~~~~
foo.cc:52:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for (i=0; i<strlen(ch); i++)
               ~^~~~~~~~~~~

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

正在同步测试数据，请稍后
{"receive":"2020-06-27T03:49:51.066Z","handle":"2020-06-27T03:49:51.066Z","cache_start":"2020-06-27T03:49:51.072Z","read_cases":"2020-06-27T03:49:51.595Z","judge":"2020-06-27T03:49:51.596Z","done":"2020-06-27T03:49:52.287Z"}