import java.util.Arrays;
import java.util.Scanner;

public class Main {
	public static void main(String[] args) {
		Scanner sc = new Scanner((System.in));
		int[] a = new int[3];
		int sum = 0;

		for (int i = 0; i < 3; i++) {
			a[i] = sc.nextInt();
		}
		
		Arrays.sort(a);
		
		sum = (a[1] - a[0]) + (a[2] - a[1]);
		
		System.out.println(sum);
		
		sc.close();
	}
} import java.util.Arrays; Arrays java.util import java.util.Scanner; Scanner java.util public class Main {
	public static void main(String[] args) {
		Scanner sc = new Scanner((System.in));
		int[] a = new int[3];
		int sum = 0;

		for (int i = 0; i < 3; i++) {
			a[i] = sc.nextInt();
		}
		
		Arrays.sort(a);
		
		sum = (a[1] - a[0]) + (a[2] - a[1]);
		
		System.out.println(sum);
		
		sc.close();
	}
} Main public static void main(String[] args) {
		Scanner sc = new Scanner((System.in));
		int[] a = new int[3];
		int sum = 0;

		for (int i = 0; i < 3; i++) {
			a[i] = sc.nextInt();
		}
		
		Arrays.sort(a);
		
		sum = (a[1] - a[0]) + (a[2] - a[1]);
		
		System.out.println(sum);
		
		sc.close();
	} main {
		Scanner sc = new Scanner((System.in));
		int[] a = new int[3];
		int sum = 0;

		for (int i = 0; i < 3; i++) {
			a[i] = sc.nextInt();
		}
		
		Arrays.sort(a);
		
		sum = (a[1] - a[0]) + (a[2] - a[1]);
		
		System.out.println(sum);
		
		sc.close();
	} Scanner sc = new Scanner((System.in)); sc new Scanner((System.in)) int[] a = new int[3]; a new int[3] 3 int sum = 0; sum 0 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 sum = (a[1] - a[0]) + (a[2] - a[1]) sum (a[1] - a[0]) + (a[2] - a[1]) (a[1] - a[0]) a[1] a 1 a[0] a 0 (a[2] - a[1]) a[2] a 2 a[1] a 1 System.out.println(sum) System.out.println System.out System System.out sum 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];
		int sum = 0;

		for (int i = 0; i < 3; i++) {
			a[i] = sc.nextInt();
		}
		
		Arrays.sort(a);
		
		sum = (a[1] - a[0]) + (a[2] - a[1]);
		
		System.out.println(sum);
		
		sc.close();
	}
} public class Main {
	public static void main(String[] args) {
		Scanner sc = new Scanner((System.in));
		int[] a = new int[3];
		int sum = 0;

		for (int i = 0; i < 3; i++) {
			a[i] = sc.nextInt();
		}
		
		Arrays.sort(a);
		
		sum = (a[1] - a[0]) + (a[2] - a[1]);
		
		System.out.println(sum);
		
		sc.close();
	}
} Main
import java.util.Arrays;
import java.util.Scanner;

public class Main {
	public static void main(String[] args) {
		Scanner sc = new Scanner((System.in));
		int[] a = new int[3];
		int sum = 0;

		for (int i = 0; i < 3; i++) {
			a[i] = sc.nextInt();
		}
		
		Arrays.sort(a);
		
		sum = (a[1] - a[0]) + (a[2] - a[1]);
		
		System.out.println(sum);
		
		sc.close();
	}
}
