import java.util.*;

public class Main {
    public static void main(String[] args) throws Exception {
        Scanner sc = new Scanner(System.in);
        int a = sc.nextInt();
        int b = sc.nextInt();
        int c = sc.nextInt();
        int[] task = {a, b, c};
        Arrays.sort(task);
 
        int result = (task[2]-task[1]) + (task[1]-task[0]);

        System.out.println(result);
    }
} import java.util.*; util.* java public class Main {
    public static void main(String[] args) throws Exception {
        Scanner sc = new Scanner(System.in);
        int a = sc.nextInt();
        int b = sc.nextInt();
        int c = sc.nextInt();
        int[] task = {a, b, c};
        Arrays.sort(task);
 
        int result = (task[2]-task[1]) + (task[1]-task[0]);

        System.out.println(result);
    }
} Main public static void main(String[] args) throws Exception {
        Scanner sc = new Scanner(System.in);
        int a = sc.nextInt();
        int b = sc.nextInt();
        int c = sc.nextInt();
        int[] task = {a, b, c};
        Arrays.sort(task);
 
        int result = (task[2]-task[1]) + (task[1]-task[0]);

        System.out.println(result);
    } main {
        Scanner sc = new Scanner(System.in);
        int a = sc.nextInt();
        int b = sc.nextInt();
        int c = sc.nextInt();
        int[] task = {a, b, c};
        Arrays.sort(task);
 
        int result = (task[2]-task[1]) + (task[1]-task[0]);

        System.out.println(result);
    } Scanner sc = new Scanner(System.in); sc new Scanner(System.in) int a = sc.nextInt(); a sc.nextInt() sc.nextInt sc int b = sc.nextInt(); b sc.nextInt() sc.nextInt sc int c = sc.nextInt(); c sc.nextInt() sc.nextInt sc int[] task = {a, b, c}; task {a, b, c} a b c Arrays.sort(task) Arrays.sort Arrays task int result = (task[2]-task[1]) + (task[1]-task[0]); result (task[2]-task[1]) + (task[1]-task[0]) (task[2]-task[1]) task[2] task 2 task[1] task 1 (task[1]-task[0]) task[1] task 1 task[0] task 0 System.out.println(result) System.out.println System.out System System.out result String[] args args public class Main {
    public static void main(String[] args) throws Exception {
        Scanner sc = new Scanner(System.in);
        int a = sc.nextInt();
        int b = sc.nextInt();
        int c = sc.nextInt();
        int[] task = {a, b, c};
        Arrays.sort(task);
 
        int result = (task[2]-task[1]) + (task[1]-task[0]);

        System.out.println(result);
    }
} public class Main {
    public static void main(String[] args) throws Exception {
        Scanner sc = new Scanner(System.in);
        int a = sc.nextInt();
        int b = sc.nextInt();
        int c = sc.nextInt();
        int[] task = {a, b, c};
        Arrays.sort(task);
 
        int result = (task[2]-task[1]) + (task[1]-task[0]);

        System.out.println(result);
    }
} Main
import java.util.*;

public class Main {
    public static void main(String[] args) throws Exception {
        Scanner sc = new Scanner(System.in);
        int a = sc.nextInt();
        int b = sc.nextInt();
        int c = sc.nextInt();
        int[] task = {a, b, c};
        Arrays.sort(task);
 
        int result = (task[2]-task[1]) + (task[1]-task[0]);

        System.out.println(result);
    }
}
