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  1. #include <bits/stdc++.h>
  2. using namespace std;
  3. signed main(){
  4. 	long double c, d;
  5. 	cin >> c >> d;
  6. 	long double l = 0, r = 1e12;
  7. 	long double mid;
  8. 	for(int i = 0; i < 100; i++){
  9. 		mid = (l + r) * 0.5;
  10. 		if(c + sqrt(mid) > d + mid * mid) l = mid;
  11. 		else if(c + sqrt(mid) < d + (mid * mid)) r = mid;
  12. 	}
  13. 	cout << fixed << setprecision(15) << mid << endl; 
  14. }
Success #stdin #stdout 0.01s 5284KB
comments (?)
stdin 
22 8
stdout 
4.000000000000000
https://ideone.com/qyCXAh
language:
C++14 (gcc 8.3)
created:
3 days ago
visibility:
public

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