import java.util.Scanner;
public class BinaryToOctal
{
    public static void main()
    {
        int count=0;
        Scanner sc=new Scanner(System.in);
        long binary=0,octal=0,decimal=0,temp=0;
        count=0;
        System.out.print("ENTER BINARY NUMBER:");
        binary=sc.nextInt();
        temp=binary;   
        while(temp>0)
        {
            decimal=decimal+(temp%10)*((long)Math.pow(2,count));

            count++;
            temp=temp/10;
        }
        temp=decimal;
        count=0;
        while(temp>0)
        {
            octal=octal+(temp%8)*(long)Math.pow(10,count);

            count++;
            temp=temp/8;
        }
        System.out.println("THE OCTAL VALUE OF BINARY "+binary+" IS "+octal);
    }
}