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  1. #include <iostream>
  2. #include <cmath>
  3. #include <limits>
  4. using namespace std;
  5. int main() {
  6. double b,a;
  7. double inf = std::numeric_limits<double>::infinity();
  8. double c;
  9. cin>>b>>a;
  10. c=(b<a)?inf:sqrt(b*b-a*a);
  11. cout<<c;
  12. return 0;
  13. }
Success #stdin #stdout 0s 4588KB
stdin
Standard input is empty
stdout
Standard output is empty