import java.math.*;
import java.util.*;

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);
        System.out.println(a[2] - a[1] + a[1] - a[0]);
    }
} import java.math.*; math.* java import java.util.*; util.* 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);
        System.out.println(a[2] - a[1] + a[1] - a[0]);
    }
} 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);
        System.out.println(a[2] - a[1] + a[1] - a[0]);
    } 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);
        System.out.println(a[2] - a[1] + a[1] - a[0]);
    } 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] a i sc.nextInt() sc.nextInt sc Arrays.sort(a) Arrays.sort Arrays a System.out.println(a[2] - a[1] + a[1] - a[0]) System.out.println System.out System System.out a[2] - a[1] + a[1] - a[0] a[2] - a[1] + a[1] a[2] - a[1] a[2] a 2 a[1] a 1 a[1] a 1 a[0] a 0 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);
        System.out.println(a[2] - a[1] + a[1] - a[0]);
    }
} 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);
        System.out.println(a[2] - a[1] + a[1] - a[0]);
    }
} Main
import java.math.*;
import java.util.*;

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);
        System.out.println(a[2] - a[1] + a[1] - a[0]);
    }
}
