import java.util.*;
import java.util.Scanner;
public class First {

	public static void main(String[] args) {
    Scanner in=new Scanner(System.in);
    System.out.println("Enter any binary number : ");
    int num=in.nextInt();
    int dicimalNum=toDicimal(num);
    System.out.println("Number in dicimal is equal to : "+dicimalNum);
    System.out.println("Enter any dicimal number : ");
    int num2=in.nextInt();
    System.out.println("Number in binary is equal : ");
    toBinary(num2);
    	
	}
	public static int toDicimal(int num) {
		int digit=num%10 ;
		int sum=0;
		int index=0 ;
		while(num>0) {
		sum+=digit* Math.pow(2,index) ;
		num/=10;
		index++;
		digit=num%10 ;
		}
		return sum;
		
	}
	public static void toBinary(int num2) { //Additional task .
		int rem ,i=0;
		int[] binaryNum=new int [20];
		while(num2>0) {
			rem=num2 %2;
			binaryNum[i]=rem;
			num2 /=2;
			i++;
		}
		for(int j=i-1;j>=0;j--) {
			System.out.print(binaryNum[j]);
		}
		
	}
}