foo.cc: In function 'int main()':
foo.cc:14:11: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for(i=0;i<line.length();i++)
           ^
foo.cc:11:8: warning: variable 'j' set but not used [-Wunused-but-set-variable]
  int i,j=0;
        ^

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

{"receive":"2020-04-05T08:45:09.444Z","handle":"2020-04-05T08:45:09.444Z","cache_start":"2020-04-05T08:45:09.452Z","read_cases":"2020-04-05T08:45:09.968Z","judge":"2020-04-05T08:45:09.968Z","done":"2020-04-05T08:45:10.828Z"}