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  1. #include <bits/stdc++.h>
  2. #include <iostream>
  3. using namespace std;
  4. #define Deghish ios_base::sync_with_stdio(false);cin.tie(NULL);
  5. double EPS=1e-10;
  6. void solve() {
  7.   double d;cin>>d;
  8.     if (d > 0 && d < 4) {
  9.         cout << "N" << endl;
  10.         return;
  11.     }
  12.     double aa,bb;
  13.     double l=0,h=d/2;
  14.     while (h-l>EPS) {
  15.         double mid=(l+h)/2.0;
  16.         double a=d-mid;
  17.         double b=mid;
  18. 		if (a+b-d==EPS) {
  19.             aa=a,bb=b;
  20.             break;
  21.         }
  22.         if (a*b<d) {
  23.             l=mid;
  24.         }else {
  25.             h=mid;
  26.         }
  27.     }
  28.     cout<<fixed<<setprecision(9)<<"Y "<<aa<<" "<<bb<<endl;
  29. }
  30. signed main() {
  31.     Deghish
  32.     int Tc = 1;//
  33.     cin >> Tc;
  34.     while (Tc--) {
  35.         solve();
  36.     }
  37.     return 0;
  38. }
  39.  
Success #stdin #stdout 0s 5320KB
comments (?)
stdin
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7
69
0
1
4
5
999
1000
stdout
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Y 67.985071300 1.014928700
Y 0.000000000 0.000000000
N
Y 2.000000015 1.999999985
Y 3.618033989 1.381966011
Y 997.998996990 1.001003010
Y 998.998997995 1.001002005
https://ideone.com/ObX0dE
language:
C++ (gcc 8.3)
created:
23 hours ago
visibility:
public

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