View Code of Problem 3700

import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collections;
import java.util.List;
import java.util.Scanner;

public class Main {
	public static void main(String[] args) {
		Scanner scanner = new Scanner(System.in);
		while(scanner.hasNext()) {
			ArrayList<Integer> list = new ArrayList<Integer>();
			int x = scanner.nextInt();
			if(x==0) {
				break;
			}
			while(x>1) {
				list.add(x % 2);
				x /= 2;
			}
			list.add(x);
			List<Integer> l = new ArrayList<Integer>();
 			for(int i=0; i<list.size(); i++) {
 				l.add(list.get(i));
				if(list.get(i) != 0) {
					break;
				}
				
 			}
 			int temp = 1;
 			int sum = 0;
 			for(int i=0; i<l.size(); i++) {
 				sum+=l.get(i) * temp;
 				temp *= 2;
 			}
 			System.out.println(sum);
		}
	}
}