import java.util.Scanner; public class Main { public static void main(String[] args) { Scanner scanner = new Scanner(System.in); int a=scanner.nextInt(); int b=scanner.nextInt(); int sum=0; for (int i = a; i <= b; i++) { String n=Integer.toBinaryString(i); for (int j = 0; j < n.length(); j++) { if (n.charAt(j)=='1') { sum++; } } } System.out.println(sum); } }
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