import java.util.*;
import java.lang.*;
import java.io.*;
 
class Ideone
{
	public static void main (String[] args) 
	{
		double x,e; //описание переменных 
		Scanner sc = new Scanner(System.in);
		x = sc.nextDouble(); //ввод условий
		e = sc.nextDouble();
	    double y1;
	    int i=0;
	    double y2=x; //задаем начальное приближение
	    do
	    {
	        y1=y2;
	        y2=0.5*(y1+x/y1); //вычисление по заданной формуле
	        i=i+1; //подсчет количества итераций
	    } while(Math.abs(y2-y1)>=e);
	    System.out.printf("%f\n",y2);
	    System.out.printf("%e\n",Math.abs(Math.sqrt(x)-y2)); //сравнение с результатом встроенной функции
	    System.out.printf("%d",i);
	}
}

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MTAwIDFlLTIK

100 1e-2