foo.cc: In function 'int main()':
foo.cc:5:8: warning: unused variable 'b' [-Wunused-variable]
  int a,b,c,d,e=0,f=0,s=0,x=0,t=0;
        ^
foo.cc:5:10: warning: unused variable 'c' [-Wunused-variable]
  int a,b,c,d,e=0,f=0,s=0,x=0,t=0;
          ^
foo.cc:5:12: warning: unused variable 'd' [-Wunused-variable]
  int a,b,c,d,e=0,f=0,s=0,x=0,t=0;
            ^
foo.cc:5:18: warning: unused variable 'f' [-Wunused-variable]
  int a,b,c,d,e=0,f=0,s=0,x=0,t=0;
                  ^
foo.cc:5:26: warning: unused variable 'x' [-Wunused-variable]
  int a,b,c,d,e=0,f=0,s=0,x=0,t=0;
                          ^
foo.cc:5:30: warning: unused variable 't' [-Wunused-variable]
  int a,b,c,d,e=0,f=0,s=0,x=0,t=0;
                              ^

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

{"receive":"2020-08-11T02:22:42.360Z","handle":"2020-08-11T02:22:42.360Z","cache_start":"2020-08-11T02:22:42.369Z","read_cases":"2020-08-11T02:22:42.590Z","judge":"2020-08-11T02:22:42.592Z","done":"2020-08-11T02:22:43.065Z"}