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[0]);
    }
} 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[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[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[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] = sc.nextInt() a[i] a i sc.nextInt() sc.nextInt sc Arrays.sort(a) Arrays.sort Arrays a System.out.println(a[2] - a[0]) System.out.println System.out System System.out a[2] - a[0] a[2] a 2 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[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[0]);
    }
} Main
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[0]);
    }
}