foo.cc: In function 'int main()':
foo.cc:15:20: warning: format '%f' expects argument of type 'double', but argument 2 has type 'int' [-Wformat=]
   15 |         printf("%.2f",d);
      |                 ~~~^  ~
      |                    |  |
      |                    |  int
      |                    double
      |                 %.2d

[Hydro](https://hydro.ac)提供评测服务