#include <iostream>
#include <iomanip>
int main() {
std::cout << std::fixed << std::setprecision(6) << 8.5f << std::endl;
std::cout << std::fixed << std::setprecision(6) << 9.0f << std::endl;
std::cout << std::fixed << std::setprecision(6) << 10.0f << std::endl;
return 0;
}
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