foo.cc: In function 'int main()':
foo.cc:22:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d",&n);
     ~~~~~^~~~~~~~~
foo.cc:23:27: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     for(i=1;i<=n;i++)scanf("%lf%lf",&point[i].x,&point[i].y);
                      ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

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

{"receive":"2020-06-23T03:59:45.226Z","handle":"2020-06-23T03:59:45.226Z","cache_start":"2020-06-23T03:59:45.232Z","read_cases":"2020-06-23T03:59:45.370Z","judge":"2020-06-23T03:59:45.373Z","done":"2020-06-23T03:59:47.900Z"}