Codeforces The New Year: Meeting Friends

import java.util.Arrays;import java.util.Scanner;public class TheNewYearMeetingFriends {public static void main(String[] args) {Scanner scanner = new Scanner(System.in);int[] a = new int[3];while(scanner.hasNext()) {for(int i = 0; i < 3; i++) {a[i] = scanner.nextInt();}Arrays.sort(a);System.out.println(a[1] - a[0] + a[2] - a[1]);}}}