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]);
}
}
}