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0_0_39388591_7934.cpp: In function 'int main()':
0_0_39388591_7934.cpp:18:41: error: 'setprecision' is not a member of 'std'
   18 |         std::cout << std::fixed << std::setprecision(3) << distance << std::endl;
      |                                         ^~~~~~~~~~~~
0_0_39388591_7934.cpp:3:1: note: 'std::setprecision' is defined in header '<iomanip>'; did you forget to '#include <iomanip>'?
    2 | #include <cmath>
  +++ |+#include <iomanip>
    3 |