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 = sc.nextInt();
		int b = sc.nextInt();
		int c = sc.nextInt();

		int[] d = {Math.abs(a - b), Math.abs(b - c), Math.abs(c - a)};
		Arrays.sort(d);

		System.out.println(d[0] + d[1]);
	}
} 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 = sc.nextInt();
		int b = sc.nextInt();
		int c = sc.nextInt();

		int[] d = {Math.abs(a - b), Math.abs(b - c), Math.abs(c - a)};
		Arrays.sort(d);

		System.out.println(d[0] + d[1]);
	}
} Main public static void main(String[] args) {

		Scanner sc = new Scanner(System.in);

		int a = sc.nextInt();
		int b = sc.nextInt();
		int c = sc.nextInt();

		int[] d = {Math.abs(a - b), Math.abs(b - c), Math.abs(c - a)};
		Arrays.sort(d);

		System.out.println(d[0] + d[1]);
	} main {

		Scanner sc = new Scanner(System.in);

		int a = sc.nextInt();
		int b = sc.nextInt();
		int c = sc.nextInt();

		int[] d = {Math.abs(a - b), Math.abs(b - c), Math.abs(c - a)};
		Arrays.sort(d);

		System.out.println(d[0] + d[1]);
	} Scanner sc = new Scanner(System.in); sc new Scanner(System.in) int a = sc.nextInt(); a sc.nextInt() sc.nextInt sc int b = sc.nextInt(); b sc.nextInt() sc.nextInt sc int c = sc.nextInt(); c sc.nextInt() sc.nextInt sc int[] d = {Math.abs(a - b), Math.abs(b - c), Math.abs(c - a)}; d {Math.abs(a - b), Math.abs(b - c), Math.abs(c - a)} Math.abs(a - b) Math.abs Math a - b a b Math.abs(b - c) Math.abs Math b - c b c Math.abs(c - a) Math.abs Math c - a c a Arrays.sort(d) Arrays.sort Arrays d System.out.println(d[0] + d[1]) System.out.println System.out System System.out d[0] + d[1] d[0] d 0 d[1] d 1 String[] args args public class Main {

	public static void main(String[] args) {

		Scanner sc = new Scanner(System.in);

		int a = sc.nextInt();
		int b = sc.nextInt();
		int c = sc.nextInt();

		int[] d = {Math.abs(a - b), Math.abs(b - c), Math.abs(c - a)};
		Arrays.sort(d);

		System.out.println(d[0] + d[1]);
	}
} public class Main {

	public static void main(String[] args) {

		Scanner sc = new Scanner(System.in);

		int a = sc.nextInt();
		int b = sc.nextInt();
		int c = sc.nextInt();

		int[] d = {Math.abs(a - b), Math.abs(b - c), Math.abs(c - a)};
		Arrays.sort(d);

		System.out.println(d[0] + d[1]);
	}
} 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 = sc.nextInt();
		int b = sc.nextInt();
		int c = sc.nextInt();

		int[] d = {Math.abs(a - b), Math.abs(b - c), Math.abs(c - a)};
		Arrays.sort(d);

		System.out.println(d[0] + d[1]);
	}
}