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  1. #include <iostream>
  2. #include <iomanip>
  3. #include <cmath>
  4. using namespace std;
  5.  
  6. int main() {
  7. 	double eps = 1e-6;
  8. 	double x1, y1, x2, y2, x3, y3, r1, r2, r3, x, y;
  9. 	cin >> x1 >> y1 >> x2 >> y2 >> x3 >> y3 >> r1 >> r2 >> r3;
  10. 	x = ((y2 - y1) * (r2 * r2 - r3 * r3 - y2 * y2 + y3 * y3 - x2 * x2 + x3 * x3) - (y3 - y2) * (r1 * r1 - r2 * r2 - y1 * y1 + y2 * y2 - x1 * x1 + x2 * x2)) / (2 * ((y3 - y2) * (x1 - x2)  - (y2 - y1) * (x2 - x3)));
  11. 	y = ((x2 - x1) * (r2 * r2 - r3 * r3 - x2 * x2 + x3 * x3 - y2 * y2 + y3 * y3) - (x3 - x2) * (r1 * r1 - r2 * r2 - x1 * x1 + x2 * x2 - y1 * y1 + y2 * y2)) / (2 * ((x3 - x2) * (y1 - y2)  - (x2 - x1) * (y2 - y3)));
  12. 	if (abs((x1 - x) * (x1 - x) + (y1 - y) * (y1 - y) - r1 * r1) < eps) cout << fixed << setprecision (6) << x << " " << y << endl;
  13. 	else cout << "Impossible" << endl; 
  14. 	return 0;
  15. }
Success #stdin #stdout 0s 15232KB
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Standard input is empty
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Impossible
https://ideone.com/gTvsor
вет
language:
C++ (gcc 8.3)
created:
5 years ago
visibility:
secret

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