foo.cc: In function 'int main()':
foo.cc:14:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d%d",&n,&m);
  ~~~~~^~~~~~~~~~~~~~
foo.cc:15:32: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     for(int i=1;i<=n;i++) scanf("%d",&a[i]);
                           ~~~~~^~~~~~~~~~~~

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

正在同步测试数据，请稍后
{"receive":"2020-07-30T11:22:01.012Z","handle":"2020-07-30T11:22:01.012Z","cache_start":"2020-07-30T11:22:01.029Z","read_cases":"2020-07-30T11:22:01.860Z","judge":"2020-07-30T11:22:01.861Z","done":"2020-07-30T11:22:04.821Z"}