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0_0_39058537_31650.cpp: In function 'int main()':
0_0_39058537_31650.cpp:21:45: error: 'setprecision' is not a member of 'std'
   21 |             std::cout << std::fixed << std::setprecision(2) << s2 - s1 << std::endl;
      |                                             ^~~~~~~~~~~~
0_0_39058537_31650.cpp:2:1: note: 'std::setprecision' is defined in header '<iomanip>'; did you forget to '#include <iomanip>'?
    1 | #include <iostream>
  +++ |+#include <iomanip>
    2 |