import java.util.Scanner;
public class zad9{

public static void main(String[] args) {

Scanner in = new Scanner(System.in);

double pierw = 0;

System.out.println("podaj liczbe do pierwiastkowania");
pierw = in.nextInt();

double x1 = 0;
double x2 = pierw;
double c=0;


if (pierw>=1)
{

for (int i=0;i<100000;i++)
{
c=(x1+x2)/2;

if (c*c>pierw)
{
x2=x2-0.01;

System.out.println("wynik= "+c);

}
else
{
x1=x1+0.01;
}

}
if (c*c==pierw)
{
System.out.println("wynik= "+c);
}
}}}