Problem:
Score : 100 points

Problem Statement

You have three tasks, all of which need to be completed.

First, you can complete any one task at cost 0.

Then, just after completing the i-th task, you can complete the j-th task at cost |A_j - A_i|.

Here, |x| denotes the absolute value of x.

Find the minimum total cost required to complete all the task.

Constraints

All values in input are integers.

1 \leq A_1, A_2, A_3 \leq 100

Input

Input is given from Standard Input in the following format:

A_1 A_2 A_3

Output

Print the minimum total cost required to complete all the task.

Sample Input 1

1 6 3

Sample Output 1

5

When the tasks are completed in the following order, the total cost will be 5, which is the minimum:

Complete the first task at cost 0.

Complete the third task at cost 2.

Complete the second task at cost 3.

Sample Input 2

11 5 5

Sample Output 2

6

Sample Input 3

100 100 100

Sample Output 3

0

Solution in Java8 (OpenJDK 1.8.0) (judge verdict: Wrong Answer)


import java.util.Scanner;

public class Main {
    
    static int [] num = new int[3];
    
    public static void main(String[] args) {
        Scanner stdIn = new Scanner(System.in);
        do{
            System.out.println("1つ目の数字を入力してください");
            num[0] = stdIn.nextInt();
        }while(num[0] < 1|| 100 < num[0]);
        do{
            System.out.println("2つ目の数字を入力してください");
            num[1] = stdIn.nextInt();
        }while(num[1] < 1|| 100 < num[1]);
        do{
            System.out.println("3つ目の数字を入力してください");
            num[2] = stdIn.nextInt();
        }while(num[2] < 1|| 100 < num[2]);
        
        //ソート
        int a = 0;
        int cnt = 0;
        do{
            cnt = 0;
            for(int i = 0; i < num.length - 1; i++){
                if(num[i] < num[i + 1]){
                    a = num[i];
                    num[i] = num[i + 1];
                    num[i + 1] = a;
                    cnt++;
                }
            }
        }while(cnt != 0);
        
        //大きい数から引いてく
        int answer = 0;
        answer += num[0] - num[1];
        answer += num[1] - num[2];
        System.out.println(answer);
        }
}