package com.company;

import java.util.Scanner;

/*
Amon Guinan
Jan 2019
Program reads binary and converts to decimal.
 */
public class Six_sixtyFive {
    public static void main(String[] args) {
            Scanner input = new Scanner(System.in);
            System.out.print("Input Binary: ");
            String num_String = input.nextLine();
            int next_int;
            int dec = 0;
            for(int x = 0; x<num_String.length(); x++)
            {
                next_int = num_String.charAt(x);
                dec = dec + next_int^x;
            }
            System.out.print(dec);
    }
    }