Jakkara

import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
import java.util.Scanner;

public class Jakkara {

    public static void main(String[] args) {
        
        Scanner input = new Scanner(System.in);

        List<Integer> luvut = new ArrayList<Integer>();
        List<Integer> jalat = new ArrayList<Integer>();
        

        luvut.add(input.nextInt());
        luvut.add(input.nextInt());
        luvut.add(input.nextInt());
        luvut.add(input.nextInt());

        for(int luku : luvut) {
            
            if(!jalat.contains(luku))
                jalat.add(luku);
        }
        
        Collections.sort(jalat);
        
        if(jalat.size() == 1) {
 
            System.out.print(0);
            
        }else if(jalat.size() == 2) {

			System.out.print((jalat.get(1) - jalat.get(0)));
            
        } else if(jalat.size() == 3) {
            
            int a = (jalat.get(2) - jalat.get(1)) + (jalat.get(2) - jalat.get(0));
            int b = (jalat.get(2) - jalat.get(1)) + (jalat.get(1) - jalat.get(0));
            int c = (jalat.get(2) - jalat.get(0)) + (jalat.get(1) - jalat.get(0));
			
			List<Integer> tulos = new ArrayList<Integer>();
			
            tulos.add(a);
            tulos.add(b);
            tulos.add(c);
			
            Collections.sort(tulos);
            System.out.print(tulos.get(0));
			
        } else if(jalat.size() == 4) {
            
            int a = (jalat.get(3) - jalat.get(2)) + (jalat.get(3) - jalat.get(1)) + (jalat.get(3) - jalat.get(0));
            int b = (jalat.get(3) - jalat.get(2)) + (jalat.get(2) - jalat.get(1)) + (jalat.get(2) - jalat.get(0));
            int c = (jalat.get(3) - jalat.get(1)) + (jalat.get(2) - jalat.get(1)) + (jalat.get(1) - jalat.get(0));
            int d = (jalat.get(3) - jalat.get(0)) + (jalat.get(2) - jalat.get(0)) + (jalat.get(1) - jalat.get(0));

			List<Integer> tulos = new ArrayList<Integer>();
			
            tulos.add(a);
            tulos.add(b);
            tulos.add(c);
            tulos.add(d);

            Collections.sort(tulos);
            System.out.print(tulos.get(0));
        }
    }
}

Test 1

Group: 1

Verdict: ACCEPTED

Test 2

Group: 1

Verdict: ACCEPTED

Test 3

Group: 1

Verdict: ACCEPTED

Test 4

Group: 1

Verdict: ACCEPTED

Test 5

Group: 1

Verdict: ACCEPTED

Test 6

Group: 2

Verdict: ACCEPTED

Test 7

Group: 2

Verdict: ACCEPTED

Test 8

Group: 2

Verdict: WRONG ANSWER

Test 9

Group: 2

Verdict: ACCEPTED

Test 10

Group: 2

Verdict: ACCEPTED

Test 11

Group: 3

Verdict: ACCEPTED

Test 12

Group: 3

Verdict: ACCEPTED

Test 13

Group: 3

Verdict: ACCEPTED

Test 14

Group: 3

Verdict: ACCEPTED

Test 15

Group: 3

Verdict: ACCEPTED