import java.util.*;

public class Main{
  public static void main(String[] args){
    int[] a = new int[3];
    Scanner sc = new Scanner(System.in);
    for(int i=0; i<3; i++){
      a[i] = Integer.parseInt(sc.next());
    }

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

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

    Arrays.sort(a);
    System.out.println(a[2]-a[0]);
  } main {
    int[] a = new int[3];
    Scanner sc = new Scanner(System.in);
    for(int i=0; i<3; i++){
      a[i] = Integer.parseInt(sc.next());
    }

    Arrays.sort(a);
    System.out.println(a[2]-a[0]);
  } int[] a = new int[3]; a new int[3] 3 Scanner sc = new Scanner(System.in); sc new Scanner(System.in) for(int i=0; i<3; i++){
      a[i] = Integer.parseInt(sc.next());
    } int i=0; int i=0; i 0 i<3 i 3 i++ i++ i {
      a[i] = Integer.parseInt(sc.next());
    } {
      a[i] = Integer.parseInt(sc.next());
    } a[i] = Integer.parseInt(sc.next()) a[i] a i Integer.parseInt(sc.next()) Integer.parseInt Integer sc.next() sc.next 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){
    int[] a = new int[3];
    Scanner sc = new Scanner(System.in);
    for(int i=0; i<3; i++){
      a[i] = Integer.parseInt(sc.next());
    }

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

    Arrays.sort(a);
    System.out.println(a[2]-a[0]);
  }
} Main
import java.util.*;

public class Main{
  public static void main(String[] args){
    int[] a = new int[3];
    Scanner sc = new Scanner(System.in);
    for(int i=0; i<3; i++){
      a[i] = Integer.parseInt(sc.next());
    }

    Arrays.sort(a);
    System.out.println(a[2]-a[0]);
  }
}