import java.util.*;

public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        List<Integer> list = new ArrayList<>();
        list.add(sc.nextInt());
        list.add(sc.nextInt());
        list.add(sc.nextInt());

        Collections.sort(list);
        System.out.println(list.get(2) - list.get(0));
    }
} import java.util.*; util.* java public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        List<Integer> list = new ArrayList<>();
        list.add(sc.nextInt());
        list.add(sc.nextInt());
        list.add(sc.nextInt());

        Collections.sort(list);
        System.out.println(list.get(2) - list.get(0));
    }
} Main public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        List<Integer> list = new ArrayList<>();
        list.add(sc.nextInt());
        list.add(sc.nextInt());
        list.add(sc.nextInt());

        Collections.sort(list);
        System.out.println(list.get(2) - list.get(0));
    } main {
        Scanner sc = new Scanner(System.in);
        List<Integer> list = new ArrayList<>();
        list.add(sc.nextInt());
        list.add(sc.nextInt());
        list.add(sc.nextInt());

        Collections.sort(list);
        System.out.println(list.get(2) - list.get(0));
    } Scanner sc = new Scanner(System.in); sc new Scanner(System.in) List<Integer> list = new ArrayList<>(); list new ArrayList<>() list.add(sc.nextInt()) list.add list sc.nextInt() sc.nextInt sc list.add(sc.nextInt()) list.add list sc.nextInt() sc.nextInt sc list.add(sc.nextInt()) list.add list sc.nextInt() sc.nextInt sc Collections.sort(list) Collections.sort Collections list System.out.println(list.get(2) - list.get(0)) System.out.println System.out System System.out list.get(2) - list.get(0) list.get(2) list.get list 2 list.get(0) list.get list 0 String[] args args public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        List<Integer> list = new ArrayList<>();
        list.add(sc.nextInt());
        list.add(sc.nextInt());
        list.add(sc.nextInt());

        Collections.sort(list);
        System.out.println(list.get(2) - list.get(0));
    }
} public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        List<Integer> list = new ArrayList<>();
        list.add(sc.nextInt());
        list.add(sc.nextInt());
        list.add(sc.nextInt());

        Collections.sort(list);
        System.out.println(list.get(2) - list.get(0));
    }
} Main
import java.util.*;

public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        List<Integer> list = new ArrayList<>();
        list.add(sc.nextInt());
        list.add(sc.nextInt());
        list.add(sc.nextInt());

        Collections.sort(list);
        System.out.println(list.get(2) - list.get(0));
    }
}
