import java.util.*;

 // Compiler version JDK 11.0.2

 class Dcoder
 {
   public static void main(String args[])
   { 
    Scanner sc=new Scanner(System.in);
    int n,d,t,s=0,i=0;
    System.out.println("Enter a binary number");
    n=sc.nextInt();
    t=n;
    while(n>0)
    {
      d=n%10;
      s=s+d*(int)Math.pow(2,i);
      i++;
      n=n/10;
      }
      System.out.println("Decimal number is"+" "+s);
      System.out.println("Thank you,please leave a 🌟");
      }
     }
