foo.cc: In function 'int main()':
foo.cc:16:21: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
         int n; scanf("%d",&n);
                ~~~~~^~~~~~~~~
foo.cc:17:36: 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":"2020-07-20T08:44:12.548Z","handle":"2020-07-20T08:44:12.548Z","cache_start":"2020-07-20T08:44:12.554Z","read_cases":"2020-07-20T08:44:14.798Z","judge":"2020-07-20T08:44:14.799Z","done":"2020-07-20T08:44:16.107Z"}