foo.cc: In function 'void deal_first()':
foo.cc:24:8: warning: unused variable 'j' [-Wunused-variable]
  int i,j;
        ^
foo.cc: In function 'int main()':
foo.cc:42:12: warning: unused variable 'u' [-Wunused-variable]
  int i,j,k,u,v,e,o;
            ^
foo.cc:42:16: warning: unused variable 'e' [-Wunused-variable]
  int i,j,k,u,v,e,o;
                ^
foo.cc:42:18: warning: unused variable 'o' [-Wunused-variable]
  int i,j,k,u,v,e,o;
                  ^

自豪的采用jd5进行评测(github.com/masnn/jd5)

{"receive":"2020-02-27T13:23:39.717Z","handle":"2020-02-27T13:23:39.717Z","cache_start":"2020-02-27T13:23:39.717Z","read_cases":"2020-02-27T13:23:40.399Z","judge":"2020-02-27T13:23:40.399Z","done":"2020-02-27T13:23:41.300Z"}