foo.cc: In function 'void init()':
foo.cc:38:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   38 |  scanf(" %d %lf",&N,&R);
      |  ~~~~~^~~~~~~~~~~~~~~~~
foo.cc:39:30: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   39 |  for (int i=1;i<=N;i++) scanf(" %lf %lf",&A[i].x,&A[i].y);
      |                         ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~

正在同步测试数据，请稍后
[Hydro](https://hydro.ac)提供评测服务