foo.cc: In function 'int main()':
foo.cc:20:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d %d",&t,&m);
  ~~~~~^~~~~~~~~~~~~~~
foo.cc:24:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d %d",&v[i],&w[i]);
   ~~~~~^~~~~~~~~~~~~~~~~~~~~

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

{"receive":"2020-07-27T05:37:23.930Z","handle":"2020-07-27T05:37:23.930Z","cache_start":"2020-07-27T05:37:23.937Z","read_cases":"2020-07-27T05:37:24.053Z","judge":"2020-07-27T05:37:24.060Z","done":"2020-07-27T05:37:24.469Z"}