foo.cc: In function 'void solve()':
foo.cc:42:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   42 |         scanf("%lf%lf",&x[i],&y[i]);
      |         ~~~~~^~~~~~~~~~~~~~~~~~~~~~
foo.cc: In function 'int main()':
foo.cc:51:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   51 |     scanf("%d%lf",&n,&r);
      |     ~~~~~^~~~~~~~~~~~~~~

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