foo.cc: In function 'int main()':
foo.cc:23:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d",&n);
     ~~~~~^~~~~~~~~
foo.cc:25:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
         scanf("%d%d%d",&edge[i].x,&edge[i].y,&edge[i].z);
         ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

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

{"receive":"2020-05-31T13:04:03.774Z","handle":"2020-05-31T13:04:03.774Z","cache_start":"2020-05-31T13:04:03.781Z","read_cases":"2020-05-31T13:04:03.923Z","judge":"2020-05-31T13:04:03.926Z","done":"2020-05-31T13:04:04.346Z"}