import java.io.OutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.PrintWriter;
import java.util.Scanner;

/**
 * Built using CHelper plug-in
 * Actual solution is at the top
 */
public class Main {
    public static void main(String[] args) {
        InputStream inputStream = System.in;
        OutputStream outputStream = System.out;
        Scanner in = new Scanner(inputStream);
        PrintWriter out = new PrintWriter(outputStream);
        A solver = new A();
        solver.solve(1, in, out);
        out.close();
    }

    static class A {
        public void solve(int testNumber, Scanner in, PrintWriter out) {
            // 入力
            int a1 = Integer.parseInt(in.next());
            int a2 = Integer.parseInt(in.next());
            int a3 = Integer.parseInt(in.next());
            int ans = 1000;

            ans = Math.min(ans, Math.abs(a1 - a2) + Math.abs(a2 - a3));
            ans = Math.min(ans, Math.abs(a1 - a3) + Math.abs(a3 - a2));
            ans = Math.min(ans, Math.abs(a2 - a1) + Math.abs(a1 - a3));
            ans = Math.min(ans, Math.abs(a2 - a3) + Math.abs(a3 - a1));
            ans = Math.min(ans, Math.abs(a3 - a1) + Math.abs(a1 - a2));
            ans = Math.min(ans, Math.abs(a3 - a2) + Math.abs(a2 - a1));

            // 出力
            out.println(ans);

        }

    }
}
 import java.io.OutputStream; OutputStream java.io import java.io.IOException; IOException java.io import java.io.InputStream; InputStream java.io import java.io.PrintWriter; PrintWriter java.io import java.util.Scanner; Scanner java.util public class Main {
    public static void main(String[] args) {
        InputStream inputStream = System.in;
        OutputStream outputStream = System.out;
        Scanner in = new Scanner(inputStream);
        PrintWriter out = new PrintWriter(outputStream);
        A solver = new A();
        solver.solve(1, in, out);
        out.close();
    }

    static class A {
        public void solve(int testNumber, Scanner in, PrintWriter out) {
            // 入力
            int a1 = Integer.parseInt(in.next());
            int a2 = Integer.parseInt(in.next());
            int a3 = Integer.parseInt(in.next());
            int ans = 1000;

            ans = Math.min(ans, Math.abs(a1 - a2) + Math.abs(a2 - a3));
            ans = Math.min(ans, Math.abs(a1 - a3) + Math.abs(a3 - a2));
            ans = Math.min(ans, Math.abs(a2 - a1) + Math.abs(a1 - a3));
            ans = Math.min(ans, Math.abs(a2 - a3) + Math.abs(a3 - a1));
            ans = Math.min(ans, Math.abs(a3 - a1) + Math.abs(a1 - a2));
            ans = Math.min(ans, Math.abs(a3 - a2) + Math.abs(a2 - a1));

            // 出力
            out.println(ans);

        }

    }
} Main public static void main(String[] args) {
        InputStream inputStream = System.in;
        OutputStream outputStream = System.out;
        Scanner in = new Scanner(inputStream);
        PrintWriter out = new PrintWriter(outputStream);
        A solver = new A();
        solver.solve(1, in, out);
        out.close();
    } main {
        InputStream inputStream = System.in;
        OutputStream outputStream = System.out;
        Scanner in = new Scanner(inputStream);
        PrintWriter out = new PrintWriter(outputStream);
        A solver = new A();
        solver.solve(1, in, out);
        out.close();
    } InputStream inputStream = System.in; inputStream System.in System System.in OutputStream outputStream = System.out; outputStream System.out System System.out Scanner in = new Scanner(inputStream); in new Scanner(inputStream) PrintWriter out = new PrintWriter(outputStream); out new PrintWriter(outputStream) A solver = new A(); solver new A() solver.solve(1, in, out) solver.solve solver 1 in out out.close() out.close out String[] args args static class A {
        public void solve(int testNumber, Scanner in, PrintWriter out) {
            // 入力
            int a1 = Integer.parseInt(in.next());
            int a2 = Integer.parseInt(in.next());
            int a3 = Integer.parseInt(in.next());
            int ans = 1000;

            ans = Math.min(ans, Math.abs(a1 - a2) + Math.abs(a2 - a3));
            ans = Math.min(ans, Math.abs(a1 - a3) + Math.abs(a3 - a2));
            ans = Math.min(ans, Math.abs(a2 - a1) + Math.abs(a1 - a3));
            ans = Math.min(ans, Math.abs(a2 - a3) + Math.abs(a3 - a1));
            ans = Math.min(ans, Math.abs(a3 - a1) + Math.abs(a1 - a2));
            ans = Math.min(ans, Math.abs(a3 - a2) + Math.abs(a2 - a1));

            // 出力
            out.println(ans);

        }

    } A public void solve(int testNumber, Scanner in, PrintWriter out) {
            // 入力
            int a1 = Integer.parseInt(in.next());
            int a2 = Integer.parseInt(in.next());
            int a3 = Integer.parseInt(in.next());
            int ans = 1000;

            ans = Math.min(ans, Math.abs(a1 - a2) + Math.abs(a2 - a3));
            ans = Math.min(ans, Math.abs(a1 - a3) + Math.abs(a3 - a2));
            ans = Math.min(ans, Math.abs(a2 - a1) + Math.abs(a1 - a3));
            ans = Math.min(ans, Math.abs(a2 - a3) + Math.abs(a3 - a1));
            ans = Math.min(ans, Math.abs(a3 - a1) + Math.abs(a1 - a2));
            ans = Math.min(ans, Math.abs(a3 - a2) + Math.abs(a2 - a1));

            // 出力
            out.println(ans);

        } solve {
            // 入力
            int a1 = Integer.parseInt(in.next());
            int a2 = Integer.parseInt(in.next());
            int a3 = Integer.parseInt(in.next());
            int ans = 1000;

            ans = Math.min(ans, Math.abs(a1 - a2) + Math.abs(a2 - a3));
            ans = Math.min(ans, Math.abs(a1 - a3) + Math.abs(a3 - a2));
            ans = Math.min(ans, Math.abs(a2 - a1) + Math.abs(a1 - a3));
            ans = Math.min(ans, Math.abs(a2 - a3) + Math.abs(a3 - a1));
            ans = Math.min(ans, Math.abs(a3 - a1) + Math.abs(a1 - a2));
            ans = Math.min(ans, Math.abs(a3 - a2) + Math.abs(a2 - a1));

            // 出力
            out.println(ans);

        } int a1 = Integer.parseInt(in.next()); a1 Integer.parseInt(in.next()) Integer.parseInt Integer in.next() in.next in int a2 = Integer.parseInt(in.next()); a2 Integer.parseInt(in.next()) Integer.parseInt Integer in.next() in.next in int a3 = Integer.parseInt(in.next()); a3 Integer.parseInt(in.next()) Integer.parseInt Integer in.next() in.next in int ans = 1000; ans 1000 ans = Math.min(ans, Math.abs(a1 - a2) + Math.abs(a2 - a3)) ans Math.min(ans, Math.abs(a1 - a2) + Math.abs(a2 - a3)) Math.min Math ans Math.abs(a1 - a2) + Math.abs(a2 - a3) Math.abs(a1 - a2) Math.abs Math a1 - a2 a1 a2 Math.abs(a2 - a3) Math.abs Math a2 - a3 a2 a3 ans = Math.min(ans, Math.abs(a1 - a3) + Math.abs(a3 - a2)) ans Math.min(ans, Math.abs(a1 - a3) + Math.abs(a3 - a2)) Math.min Math ans Math.abs(a1 - a3) + Math.abs(a3 - a2) Math.abs(a1 - a3) Math.abs Math a1 - a3 a1 a3 Math.abs(a3 - a2) Math.abs Math a3 - a2 a3 a2 ans = Math.min(ans, Math.abs(a2 - a1) + Math.abs(a1 - a3)) ans Math.min(ans, Math.abs(a2 - a1) + Math.abs(a1 - a3)) Math.min Math ans Math.abs(a2 - a1) + Math.abs(a1 - a3) Math.abs(a2 - a1) Math.abs Math a2 - a1 a2 a1 Math.abs(a1 - a3) Math.abs Math a1 - a3 a1 a3 ans = Math.min(ans, Math.abs(a2 - a3) + Math.abs(a3 - a1)) ans Math.min(ans, Math.abs(a2 - a3) + Math.abs(a3 - a1)) Math.min Math ans Math.abs(a2 - a3) + Math.abs(a3 - a1) Math.abs(a2 - a3) Math.abs Math a2 - a3 a2 a3 Math.abs(a3 - a1) Math.abs Math a3 - a1 a3 a1 ans = Math.min(ans, Math.abs(a3 - a1) + Math.abs(a1 - a2)) ans Math.min(ans, Math.abs(a3 - a1) + Math.abs(a1 - a2)) Math.min Math ans Math.abs(a3 - a1) + Math.abs(a1 - a2) Math.abs(a3 - a1) Math.abs Math a3 - a1 a3 a1 Math.abs(a1 - a2) Math.abs Math a1 - a2 a1 a2 ans = Math.min(ans, Math.abs(a3 - a2) + Math.abs(a2 - a1)) ans Math.min(ans, Math.abs(a3 - a2) + Math.abs(a2 - a1)) Math.min Math ans Math.abs(a3 - a2) + Math.abs(a2 - a1) Math.abs(a3 - a2) Math.abs Math a3 - a2 a3 a2 Math.abs(a2 - a1) Math.abs Math a2 - a1 a2 a1 out.println(ans) out.println out ans int testNumber testNumber Scanner in in PrintWriter out out public class Main {
    public static void main(String[] args) {
        InputStream inputStream = System.in;
        OutputStream outputStream = System.out;
        Scanner in = new Scanner(inputStream);
        PrintWriter out = new PrintWriter(outputStream);
        A solver = new A();
        solver.solve(1, in, out);
        out.close();
    }

    static class A {
        public void solve(int testNumber, Scanner in, PrintWriter out) {
            // 入力
            int a1 = Integer.parseInt(in.next());
            int a2 = Integer.parseInt(in.next());
            int a3 = Integer.parseInt(in.next());
            int ans = 1000;

            ans = Math.min(ans, Math.abs(a1 - a2) + Math.abs(a2 - a3));
            ans = Math.min(ans, Math.abs(a1 - a3) + Math.abs(a3 - a2));
            ans = Math.min(ans, Math.abs(a2 - a1) + Math.abs(a1 - a3));
            ans = Math.min(ans, Math.abs(a2 - a3) + Math.abs(a3 - a1));
            ans = Math.min(ans, Math.abs(a3 - a1) + Math.abs(a1 - a2));
            ans = Math.min(ans, Math.abs(a3 - a2) + Math.abs(a2 - a1));

            // 出力
            out.println(ans);

        }

    }
} public class Main {
    public static void main(String[] args) {
        InputStream inputStream = System.in;
        OutputStream outputStream = System.out;
        Scanner in = new Scanner(inputStream);
        PrintWriter out = new PrintWriter(outputStream);
        A solver = new A();
        solver.solve(1, in, out);
        out.close();
    }

    static class A {
        public void solve(int testNumber, Scanner in, PrintWriter out) {
            // 入力
            int a1 = Integer.parseInt(in.next());
            int a2 = Integer.parseInt(in.next());
            int a3 = Integer.parseInt(in.next());
            int ans = 1000;

            ans = Math.min(ans, Math.abs(a1 - a2) + Math.abs(a2 - a3));
            ans = Math.min(ans, Math.abs(a1 - a3) + Math.abs(a3 - a2));
            ans = Math.min(ans, Math.abs(a2 - a1) + Math.abs(a1 - a3));
            ans = Math.min(ans, Math.abs(a2 - a3) + Math.abs(a3 - a1));
            ans = Math.min(ans, Math.abs(a3 - a1) + Math.abs(a1 - a2));
            ans = Math.min(ans, Math.abs(a3 - a2) + Math.abs(a2 - a1));

            // 出力
            out.println(ans);

        }

    }
} Main
import java.io.OutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.PrintWriter;
import java.util.Scanner;

/**
 * Built using CHelper plug-in
 * Actual solution is at the top
 */
public class Main {
    public static void main(String[] args) {
        InputStream inputStream = System.in;
        OutputStream outputStream = System.out;
        Scanner in = new Scanner(inputStream);
        PrintWriter out = new PrintWriter(outputStream);
        A solver = new A();
        solver.solve(1, in, out);
        out.close();
    }

    static class A {
        public void solve(int testNumber, Scanner in, PrintWriter out) {
            // 入力
            int a1 = Integer.parseInt(in.next());
            int a2 = Integer.parseInt(in.next());
            int a3 = Integer.parseInt(in.next());
            int ans = 1000;

            ans = Math.min(ans, Math.abs(a1 - a2) + Math.abs(a2 - a3));
            ans = Math.min(ans, Math.abs(a1 - a3) + Math.abs(a3 - a2));
            ans = Math.min(ans, Math.abs(a2 - a1) + Math.abs(a1 - a3));
            ans = Math.min(ans, Math.abs(a2 - a3) + Math.abs(a3 - a1));
            ans = Math.min(ans, Math.abs(a3 - a1) + Math.abs(a1 - a2));
            ans = Math.min(ans, Math.abs(a3 - a2) + Math.abs(a2 - a1));

            // 出力
            out.println(ans);

        }

    }
}

