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 max = a;
        if (max < b)
            max = b;
        if (max < c)
            max = c;
        int min = a;
        if (min > b)
            min = b;
        if (min > c)
            min = c;
        System.out.println(max - min);
    }
} 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 max = a;
        if (max < b)
            max = b;
        if (max < c)
            max = c;
        int min = a;
        if (min > b)
            min = b;
        if (min > c)
            min = c;
        System.out.println(max - min);
    }
} 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 max = a;
        if (max < b)
            max = b;
        if (max < c)
            max = c;
        int min = a;
        if (min > b)
            min = b;
        if (min > c)
            min = c;
        System.out.println(max - min);
    } main {
        Scanner sc = new Scanner(System.in);

        int a = sc.nextInt();
        int b = sc.nextInt();
        int c = sc.nextInt();
        int max = a;
        if (max < b)
            max = b;
        if (max < c)
            max = c;
        int min = a;
        if (min > b)
            min = b;
        if (min > c)
            min = c;
        System.out.println(max - min);
    } 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 max = a; max a if (max < b)
            max = b; max < b max b max = b max b if (max < c)
            max = c; max < c max c max = c max c int min = a; min a if (min > b)
            min = b; min > b min b min = b min b if (min > c)
            min = c; min > c min c min = c min c System.out.println(max - min) System.out.println System.out System System.out max - min max min 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 max = a;
        if (max < b)
            max = b;
        if (max < c)
            max = c;
        int min = a;
        if (min > b)
            min = b;
        if (min > c)
            min = c;
        System.out.println(max - min);
    }
} 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 max = a;
        if (max < b)
            max = b;
        if (max < c)
            max = c;
        int min = a;
        if (min > b)
            min = b;
        if (min > c)
            min = c;
        System.out.println(max - min);
    }
} 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 max = a;
        if (max < b)
            max = b;
        if (max < c)
            max = c;
        int min = a;
        if (min > b)
            min = b;
        if (min > c)
            min = c;
        System.out.println(max - min);
    }
}