foo.cc: In function 'int main()':
foo.cc:45:6: warning: unused variable 'x' [-Wunused-variable]
  int x,y,z;
      ^
foo.cc:45:8: warning: unused variable 'y' [-Wunused-variable]
  int x,y,z;
        ^

自豪的采用jd5进行评测(github.com/masnn/jd5)

{"receive":"2020-02-28T03:09:30.755Z","handle":"2020-02-28T03:09:30.755Z","cache_start":"2020-02-28T03:09:30.755Z","read_cases":"2020-02-28T03:09:31.115Z","judge":"2020-02-28T03:09:31.115Z","done":"2020-02-28T03:09:32.345Z"}