学步园

 
import java.util.Scanner;
public class Main {
	static String convert(double x)
	{
		String string="";
		for(int n=0;n<20;n++)
		{
			x*=2;
			if(x==0)break;
			if(x>=1)
			{
				string+="1";
				x-=1;
			}
			else {
				string+="0";
			}
			
		}
		return string;
	}
	public static void main(String[] args) {
	Scanner scanner=new Scanner(System.in);
	 while(scanner.hasNext())
	 {
		double number=scanner.nextDouble();
		int fore=(int)number;
		double back=number-fore;
		String string1=Integer.toBinaryString(fore);
		String string2=convert(back);
		
		System.out.print(string1);
		if(string2.compareTo("")!=0)
		{
			
			if(string2.length()>20)
			{
				string2=string2.substring(0,19);
			}
			int i;
			boolean flag=false;
			for(i=string2.length()-1;i>=0;i--)
			{
				if(string2.charAt(i)!='0')
				{
					flag=true;break;
				}
			}
			if(flag)
			{
				System.out.print(".");
				string2=string2.substring(0,i+1);
				System.out.print(string2);
			}
		}
		System.out.println();
	 }
	}
}