import java.util.*;
import java.lang.*;

public class Main{
    public static void main(String[] args){
        Scanner sc = new Scanner(System.in);
        int[] a = new int[3];
        for(int i = 0;i<3;i++){
            a[i] = sc.nextInt();
        }
        Arrays.sort(a);
        int result = a[2] - a[0];
        System.out.println(result);
        sc.close();
    }
} import java.util.*; util.* java import java.lang.*; lang.* java public class Main{
    public static void main(String[] args){
        Scanner sc = new Scanner(System.in);
        int[] a = new int[3];
        for(int i = 0;i<3;i++){
            a[i] = sc.nextInt();
        }
        Arrays.sort(a);
        int result = a[2] - a[0];
        System.out.println(result);
        sc.close();
    }
} Main public static void main(String[] args){
        Scanner sc = new Scanner(System.in);
        int[] a = new int[3];
        for(int i = 0;i<3;i++){
            a[i] = sc.nextInt();
        }
        Arrays.sort(a);
        int result = a[2] - a[0];
        System.out.println(result);
        sc.close();
    } main {
        Scanner sc = new Scanner(System.in);
        int[] a = new int[3];
        for(int i = 0;i<3;i++){
            a[i] = sc.nextInt();
        }
        Arrays.sort(a);
        int result = a[2] - a[0];
        System.out.println(result);
        sc.close();
    } Scanner sc = new Scanner(System.in); sc new Scanner(System.in) int[] a = new int[3]; a new int[3] 3 for(int i = 0;i<3;i++){
            a[i] = sc.nextInt();
        } int i = 0; int i = 0; i 0 i<3 i 3 i++ i++ i {
            a[i] = sc.nextInt();
        } {
            a[i] = sc.nextInt();
        } a[i] = sc.nextInt() a[i] a i sc.nextInt() sc.nextInt sc Arrays.sort(a) Arrays.sort Arrays a int result = a[2] - a[0]; result a[2] - a[0] a[2] a 2 a[0] a 0 System.out.println(result) System.out.println System.out System System.out result sc.close() sc.close sc String[] args args public class Main{
    public static void main(String[] args){
        Scanner sc = new Scanner(System.in);
        int[] a = new int[3];
        for(int i = 0;i<3;i++){
            a[i] = sc.nextInt();
        }
        Arrays.sort(a);
        int result = a[2] - a[0];
        System.out.println(result);
        sc.close();
    }
} public class Main{
    public static void main(String[] args){
        Scanner sc = new Scanner(System.in);
        int[] a = new int[3];
        for(int i = 0;i<3;i++){
            a[i] = sc.nextInt();
        }
        Arrays.sort(a);
        int result = a[2] - a[0];
        System.out.println(result);
        sc.close();
    }
} Main
import java.util.*;
import java.lang.*;

public class Main{
    public static void main(String[] args){
        Scanner sc = new Scanner(System.in);
        int[] a = new int[3];
        for(int i = 0;i<3;i++){
            a[i] = sc.nextInt();
        }
        Arrays.sort(a);
        int result = a[2] - a[0];
        System.out.println(result);
        sc.close();
    }
}