foo.cc: In function 'int main()':
foo.cc:25:12: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   int mid=l+r>>1;
           ~^~
foo.cc:17:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d%d%d",&n,&m,&L);
  ~~~~~^~~~~~~~~~~~~~~~~~~
foo.cc:19:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   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":"2020-08-10T04:21:42.534Z","handle":"2020-08-10T04:21:42.534Z","cache_start":"2020-08-10T04:21:42.542Z","read_cases":"2020-08-10T04:21:44.016Z","judge":"2020-08-10T04:21:44.017Z","done":"2020-08-10T04:21:44.386Z"}