foo.cc: In function 'int main()':
foo.cc:16:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d",&n);
  ~~~~~^~~~~~~~~
foo.cc:19:9: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
    scanf("%d",&w[i][j]);
    ~~~~~^~~~~~~~~~~~~~~

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":"2020-07-20T02:08:01.304Z","handle":"2020-07-20T02:08:01.304Z","cache_start":"2020-07-20T02:08:01.310Z","read_cases":"2020-07-20T02:08:01.738Z","judge":"2020-07-20T02:08:01.738Z","done":"2020-07-20T02:08:02.587Z"}