
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 ab = Math.abs(a - b);
		int bc = Math.abs(b - c);
		int ca = Math.abs(c - a);
		int ans = ab + bc + ca - Math.max(ab, Math.max(bc, ca));
		System.out.println(ans);

	}

} 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 ab = Math.abs(a - b);
		int bc = Math.abs(b - c);
		int ca = Math.abs(c - a);
		int ans = ab + bc + ca - Math.max(ab, Math.max(bc, ca));
		System.out.println(ans);

	}

} 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 ab = Math.abs(a - b);
		int bc = Math.abs(b - c);
		int ca = Math.abs(c - a);
		int ans = ab + bc + ca - Math.max(ab, Math.max(bc, ca));
		System.out.println(ans);

	} main {
		Scanner sc = new Scanner(System.in);
		int a = sc.nextInt();
		int b = sc.nextInt();
		int c = sc.nextInt();
		int ab = Math.abs(a - b);
		int bc = Math.abs(b - c);
		int ca = Math.abs(c - a);
		int ans = ab + bc + ca - Math.max(ab, Math.max(bc, ca));
		System.out.println(ans);

	} 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 ab = Math.abs(a - b); ab Math.abs(a - b) Math.abs Math a - b a b int bc = Math.abs(b - c); bc Math.abs(b - c) Math.abs Math b - c b c int ca = Math.abs(c - a); ca Math.abs(c - a) Math.abs Math c - a c a int ans = ab + bc + ca - Math.max(ab, Math.max(bc, ca)); ans ab + bc + ca - Math.max(ab, Math.max(bc, ca)) ab + bc + ca ab + bc + ca ab bc ca Math.max(ab, Math.max(bc, ca)) Math.max Math ab Math.max(bc, ca) Math.max Math bc ca System.out.println(ans) System.out.println System.out System System.out ans 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 ab = Math.abs(a - b);
		int bc = Math.abs(b - c);
		int ca = Math.abs(c - a);
		int ans = ab + bc + ca - Math.max(ab, Math.max(bc, ca));
		System.out.println(ans);

	}

} 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 ab = Math.abs(a - b);
		int bc = Math.abs(b - c);
		int ca = Math.abs(c - a);
		int ans = ab + bc + ca - Math.max(ab, Math.max(bc, ca));
		System.out.println(ans);

	}

} Main

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 ab = Math.abs(a - b);
		int bc = Math.abs(b - c);
		int ca = Math.abs(c - a);
		int ans = ab + bc + ca - Math.max(ab, Math.max(bc, ca));
		System.out.println(ans);

	}

}
