Jakkara

#include <iostream>
#include <cmath>

int change(int x, int val)
{
	return abs(x - val);
}

int same(int a, int b, int c, int d)
{
    int ab = 0, ac = 0, ad = 0, bc = 0, bd = 0, cd = 0;
    int abc = 0, bcd = 0, acd = 0, abd = 0;
    if (a == b) ab = 1;
    if (a == c) ac = 1;
    if (a == d) ad = 1;
    if (b == c) ab = 1;
    if (b == d) ab = 1;
    if (c == d) ab = 1;
    
    if (ab && ac) abc = 1;
    if (bc && cd) bcd = 1;
    if (ac && cd) acd = 1;
    if (ab && bd) abd = 1;
    if (abc) return a;
    if (bcd) return b;
    if (acd) return a;
    if (abd) return a;
    
    if (ab) return a;
    if (ac) return a;
    if (ad) return a;
    if (bc) return b;
    if (bd) return b;
    if (cd) return c;
    
    return 0;
}

int main()
{
	int a,b,c,d;
	std::cin >> a >> b >> c >> d;
	int min = same(a,b,c,d);
	if (min == 0) min = (a + b + c + d) / 4;
	int result = change(a, min) + change(b, min) + change(c, min) + change(d, min);
	std::cout << result << std::endl;
	return 0;
}

Test 1

Group: 1

Verdict: ACCEPTED

Test 2

Group: 1

Verdict: ACCEPTED

Test 3

Group: 1

Verdict: WRONG ANSWER

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: WRONG ANSWER

Test 11

Group: 3

Verdict: WRONG ANSWER

Test 12

Group: 3

Verdict: WRONG ANSWER

Test 13

Group: 3

Verdict: WRONG ANSWER

Test 14

Group: 3

Verdict: WRONG ANSWER

Test 15

Group: 3

Verdict: ACCEPTED