foo.cc: In function 'int main()':
foo.cc:10:28: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%lld%lld",&n,&m);
                            ^
foo.cc:12:32: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%lld%lld",&w[i],&v[i]);
                                ^

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

{"receive":"2020-03-23T00:15:06.761Z","handle":"2020-03-23T00:15:06.761Z","cache_start":"2020-03-23T00:15:06.769Z","read_cases":"2020-03-23T00:15:07.272Z","judge":"2020-03-23T00:15:07.273Z","done":"2020-03-23T00:15:09.524Z"}